-
Notifications
You must be signed in to change notification settings - Fork 2
/
Copy pathinput-output.html
562 lines (471 loc) · 25.1 KB
/
input-output.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta name="description" content="C++ I/O occurs in streams, which are sequences of bytes. If bytes flow from a device like a keyboard, a disk drive, or a network connection etc. to main memory, this is called input operation and if bytes flow from main memory to a device like a display screen, a printer, a disk drive, or a network connection, etc., this is called output operation." />
<meta name="keywords" content="c++ basic i/o,basic i/o in c++, basic i/o in cpp, basic i/o in c++, basic i/o in cpp, basic i/o, pointers, basic i/o, what is a basic i/o in c++, what are basic i/o in c++, what is a basic i/o in cpp, what are basic i/o in cpp" />
<title>C++ Input Output | C++ Tutorials | CodeMistic</title>
<!-- Google Tag Manager -->
<script>(function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':
new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],
j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src=
'https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);
})(window,document,'script','dataLayer','GTM-MCNC43J');</script>
<!-- End Google Tag Manager -->
<!-- Global site tag (gtag.js) - Google Analytics -->
<script async src="https://www.googletagmanager.com/gtag/js?id=G-YPTQSLH0XW"></script>
<script>
window.dataLayer = window.dataLayer || [];
function gtag(){dataLayer.push(arguments);}
gtag('js', new Date());
gtag('config', 'G-YPTQSLH0XW');
</script>
<script data-ad-client="ca-pub-5352867889640158" async src="https://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script>
<!-- Favicon -->
<link rel="icon" type="img/png" href="../favicon.png"/>
<!-- FONT AWESOME -->
<link rel="stylesheet" href="https://use.fontawesome.com/releases/v5.13.1/css/all.css" integrity="sha384-xxzQGERXS00kBmZW/6qxqJPyxW3UR0BPsL4c8ILaIWXva5kFi7TxkIIaMiKtqV1Q" crossorigin="anonymous"/>
<!-- FONTS -->
<link href="https://fonts.googleapis.com/css2?family=Kalam:wght@700&family=Ubuntu&family=Varela+Round&display=swap" rel="stylesheet"/>
<!-- Animate on scroll -->
<link rel="stylesheet" href="https://unpkg.com/aos@next/dist/aos.css"/>
<!-- Bootstrap -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous"/>
<!-- CSS -->
<link rel="stylesheet" href="../lang_styles.css"/>
</head>
<body>
<!-- Google Tag Manager (noscript) -->
<noscript><iframe src="https://www.googletagmanager.com/ns.html?id=GTM-MCNC43J"
height="0" width="0" style="display:none;visibility:hidden"></iframe></noscript>
<!-- End Google Tag Manager (noscript) -->
<!-- NAVIGATION BAR -->
<!-- <div class="container-fluid"> -->
<nav class="navbar fixed-top navbar-expand-xl navbar-dark">
<a class="navbar-brand" href="../index.html">CODEMISTIC</a>
<button class="navbar-toggler" type="button" data-toggle="collapse" data-target="#navbarSupportedContent" aria-controls="navbarSupportedContent" aria-expanded="false" aria-label="Toggle navigation">
<span class="navbar-toggler-icon"></span>
</button>
<div class="collapse navbar-collapse" id="navbarSupportedContent">
<ul class="navbar-nav ml-auto">
<li class="nav-item">
<a class="nav-link" href="../index.html">Home</a>
</li>
<li class="nav-item dropdown">
<a class="nav-link dropdown-toggle" href="#" id="navbarDropdown" role="button"
data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Tutorials
</a>
<div class="dropdown-menu" aria-labelledby="navbarDropdown">
<a class="dropdown-item" href="../cpp.html">C++</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="../python.html">Python</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="../java.html">Java</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="../dsa.html">Data Structure and Algorithms</a>
<div class="dropdown-divider"></div>
<a class="dropdown-item" href="../tutorials.html">All Tutorials</a>
</div>
</li>
<li class="nav-item">
<a class="nav-link" href="../events.html">Events</a>
</li>
<li class="nav-item">
<a class="nav-link" href="../teen-code.html">Teen-Code</a>
</li>
<li class="nav-item">
<a class="nav-link" href="../campus.html">Campus Programme</a>
</li>
<!-- <li class="nav-item">
<a class="nav-link" href="https://docs.google.com/forms/d/e/1FAIpQLSc2O28YJpxQc6kh2tKpI_Lf5MwfwGXVnhMs0g5EEXobJ4Beeg/viewform?usp=sf_link" target="_blank">Contribute</a>
</li> -->
<li class="nav-item">
<a class="nav-link" href="../register.html">Join Our Community</a>
</li>
</ul>
</div>
</nav>
<!-- Accordion -->
<section class="lbar">
<div class="lang-img col-md-2">
<img src="../logo/cpp.png" alt="c++" class="cpp-img" style="margin-left: -25px;" >
</div>
<ul id="accordion" class="accordion ml-5">
<li class=" collape in">
<div class="link">C++ Introduction<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse show">
<li>
<a href="getting-started.html" class="closed">Getting Started</a>
</li>
<li>
<a href="variables-and-literals.html " class="closed">C++ Variables and Literals</a>
</li>
<li>
<a href="data-types.html" class="closed">C++ Data Types</a>
</li>
<li>
<a href="input-output.html" class="opened">C++ Basic I/O</a>
</li>
<li>
<a href="type-conversion.html" class="closed">C++ Type Conversion</a>
</li>
<li>
<a href="operators.html" class="closed">C++ Operators</a>
</li>
<li>
<a href="comments.html" class="closed">C++ Comments</a>
</li>
</ul>
</li>
<li>
<div class="link">C++ Flow Control<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li>
<a href="if-else.html" class="closed">C++ if...else</a>
</li>
<li>
<a href="for-loop.html" class="closed">C++ for Loop</a>
</li>
<li>
<a href="do-while.html" class="closed">C++ do...while Loop</a>
</li>
<li>
<a href="break-and-continue.html" class="closed">C++ break & continue</a>
</li>
<li>
<a href="switch-statement.html" class="closed">C++ switch Statement</a>
</li>
<li>
<a href="goto-statement.html" class="closed">C++ goto Statement</a>
</li>
</ul>
</li>
<li>
<div class="link">C++ Function<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li>
<a href="functions.html" class="closed">C++ Functions</a>
</li>
<li>
<a href="function-types.html" class="closed">C++ Function Types</a>
</li>
<li>
<a href="function-overloading.html" class="closed">C++ Function Overloading</a>
</li>
<li>
<a href="default-argument.html" class="closed">C++ Default Argument</a>
</li>
<li>
<a href="storage-class.html" class="closed">C++ Storage Class</a>
</li>
<li>
<a href="recursion.html" class="closed">C++ Recursion</a>
</li>
<li>
<a href="return-reference.html" class="closed">C++ Return Reference</a>
</li>
</ul>
</li>
<li>
<div class="link">C++ Arrays & String<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li>
<a href="arrays.html" class="closed">C++ Arrays</a>
</li>
<li>
<a href="multidimensional-arrays.html" class="closed">C++ Multidimensional Arrays</a>
</li>
<li>
<a href="function-arrays.html" class="closed">C++ Function and Array</a>
</li>
<li>
<a href="string.html" class="closed">C++ String</a>
</li>
</ul>
</li>
<li>
<div class="link">C++ Structures<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li>
<a href="structures.html" class="closed">C++ Structures</a>
</li>
<li>
<a href="structure-fuction.html" class="closed">Structure and Function</a>
</li>
<li>
<a href="pointers-structures.html" class="closed">C++ Pointers to Structure</a>
</li>
<li>
<a href="enumeration.html" class="closed">C++ Enumeration</a>
</li>
</ul>
</li>
<li>
<div class="link">C++ Object & Class<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li>
<a href="object-class.html" class="closed">C++ Objects and Class</a>
</li>
<li>
<a href="constructors.html" class="closed">C++ Constructors</a>
</li>
<li>
<a href="objects-functions.html" class="closed">C++ Objects & Function</a>
</li>
<li>
<a href="operator-overloading.html" class="closed">C++ Operator Overloading</a>
</li>
</ul>
</li>
<li>
<div class="link">C++ Pointers<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li>
<a href="pointers.html" class="closed">C++ Pointers</a>
</li>
<li>
<a href="pointers-arrays.html" class="closed">C++ Pointers and Arrays</a>
</li>
<li>
<a href="pointers-functions.html" class="closed">C++ Pointers and Functions</a>
</li>
<li>
<a href="memory-management.html" class="closed">C++ Memory Management</a>
</li>
</ul>
</li>
<li>
<div class="link">C++ Inheritance<i class="fa fa-chevron-down"></i>
</div>
<ul class="submenu collapse">
<li>
<a href="inheritance.html" class="closed">C++ Inheritance</a>
</li>
<li>
<a href="inheritance-access-control.html" class="closed">Inheritance Access Control</a>
</li>
<li>
<a href="function-overriding.html" class="closed">C++ Function Overriding</a>
</li>
<li>
<a href="inheritence-types.html" class="closed">Inheritance Types</a>
</li>
<li>
<a href="friend-function.html" class="closed">C++ Friend Function</a>
</li>
<li>
<a href="virtual-function.html" class="closed">C++ Virtual Function</a>
</li>
<li>
<a href="templates.html" class="closed">C++ Templates</a>
</li>
</ul>
</li>
</ul>
</section>
<br>
<section class="para">
<!-- <div class="but mt-4">
<button class="btn btn-md btn-primary "><a href="../dsa.html"><i
class="fas fa-arrow-left "></i> Back to Index</a></button>
</div> -->
<!-- breadcrumb -->
<nav class="bdcrumb" id="bdcrumb" aria-label="breadcrumb">
<ul class="breadcrumb">
<li class="breadcrumb-item"><a href="../tutorials.html"><i class="fas fa-home"></i></a></li>
<li class="breadcrumb-item"><a href="../cpp.html">C++ Index</a></li>
<li class="breadcrumb-item active" aria-current="page">C++ Basic I/O </li>
</ul>
</nav>
<!-- breadcrumb ending -->
<!-- HEADING -->
<div class="wrapper">
<h3 class="pb-3 pt-3">C++ Basic Input/Output</h3>
<p>In C++, cout is used to print the instruction and show it on the
console window . cout does the same thing as printf does in
C.The proper syntax for cout requires << operator [ cout<<] for
displaying the output and in case you forget to do so you will
face syntax error.</p>
<p>Similarly the concept of cin is relatable to the scanf used in C
language. Cin is used to take the data from the user , the
entered data is stored in the memory loaction and the code
reacts with respect to that. The proper syntax for cin
requires >>operator [ cin>>].</p>
<hr/>
<p><strong>Example 1: String Output</strong></p>
<pre>#include <iostream>
using namespace std;
int main()
{
// prints the string enclosed in double quotes
cout << "GRATITUDE";
return 0;
}</pre>
<p><strong>Output:</strong></p>
<pre>GRATITUDE</pre><br>
<p><strong>Working of this program</strong></p>
<ol>
<li>We first include the header file called a iostream that allows us to display output.</li>
<li>The cout object is defined inside the std namespace. To use the std namespace, we
used the using namespace std; statement.</li>
<li>Every C++ program starts with the main() function. The execution of code begins from
the start of the main() function while the compilation begins with the first line of the code.</li>
<li>cout is an object that prints the string inside quotation marks <code>" "</code>. It is followed by
the <code><<</code> operator</li>
<li>5. return 0; is used to signal the compiler that we have not faced any problem while
writing the code and in case you have faced any problem kindly return 1. The program ends
with this statement, however, this statement is not mandatory.</li>
</ol>
<pre>#include <iostream>
int main()
{
// prints the string enclosed in double quotes
std::cout << "GRATITUDE";
return 0;
}</pre>
<hr/>
<p><strong>Example 2: Numbers and Characters Output</strong></p>
<pre>#include <iostream>
using namespace std;
int main()
{
int number1 = 33;
double number2 = 129.254;
char ch = 'G';
cout << num1 << endl; // print integer
cout << num2 << endl; // print double
cout << "character: " << ch << endl; // print char
return 0;
}
</pre>
<p><strong>Output:</strong></p>
<pre>33
129.254
character: G</pre>
<p><strong>Note:</strong></p>
<ol>
<li>The endl is a manipulator which is used to insert new line by which each output is
displayed in new line.</li>
<li>The << operator can be used more than once if we want to print different variables, strings and so on in a single statement.</li>
</ol>
<p><strong>For example:</strong></p>
<p>cout << "character: " << ch << endl;</p>
<hr/>
<p><strong>Example 3: Integer Input/Output</strong></p>
<pre>#include <iostream>
using namespace std;
int main()
{
int number;
cout << "Enter integer: ";
cin >> number; // Taking input
cout << "digit is: " << number;
return 0;
}</pre>
<p><strong>Output:</strong></p>
<pre>Enter integer: 2500
digit is: 2500</pre>
<p>In the program, we used</p>
<pre>cin >> number;</pre>
<p>to take input from the user. The input is stored in the variable number . We use
the >> operator with cin to take input.</p>
<hr/>
<p><strong>Example 4: C++ Taking Multiple Inputs</strong></p>
<pre>#include <iostream>
using namespace std;
int main()
{
char p;
int number;
cout << "Enter a character and an integer: ";
cin >> p >> number;
cout << "Character: " << p << endl;
cout << "digit: " << number;
return 0;
}</pre>
<p><strong>Output:</strong></p>
<pre>Enter a character and an integer: D
64
Character: D
digit: 64</pre>
</div>
<div class="but text-right">
<button class="btn btn-primary pull-right"><a href="type-conversion.html">Next Topic <i
class="fas fa-arrow-right "></i><br/>C++ Type Conversion</a></button>
</div><br>
</section>
<!-- footer -->
<footer >
<div class="row footer" >
<div class="logo">
<img src="../image.png" alt="" class="f-img">
<h5>LEARN CODE DISCUSS</h5>
</div>
<div class="footer-column ">
<ul class="footer-ul">
<li class="foot-header"><strong>CodeMistic</strong></li>
<li class="f-li"><a href="../index.html" class="f-links">Home</a></li>
<li class="f-li"><a href="../team.html" class="f-links">Our Team</a></li>
<li class="f-li"><a href="../terms-and-conditions.html" class="f-links">Terms of Service</a></li>
<li class="f-li"><a href="../privacy-policy.html" class="f-links">Privacy Policy</a></li>
</ul>
</div>
<div class="footer-column ">
<ul class="footer-ul ">
<li class="foot-header"><strong>LEARN</strong></li>
<li class="f-li"><a href="../cpp.html" class="f-links">C++</a></li>
<li class="f-li"><a href="../java.html" class="f-links">Java</a></li>
<li class="f-li"><a href="../python.html" class="f-links">Python</a></li>
<li class="f-li"><a href="../dsa.html" class="f-links">DSA</a></li>
</ul>
</div>
<div class="footer-column ">
<ul class="footer-ul ">
<li class="foot-header"><strong>CONTRIBUTE</strong></li>
<li class="f-li"><a href="https://docs.google.com/forms/d/e/1FAIpQLSduxk_aP9M1lqUAebQJwRXiVm2ukmdgv3T7gjBpOsr_gdeOcQ/viewform?usp=sf_link" class="f-links" target="_blank">Write an Article/Blog</a></li>
<li class="f-li"><a href="https://docs.google.com/forms/d/e/1FAIpQLSc2O28YJpxQc6kh2tKpI_Lf5MwfwGXVnhMs0g5EEXobJ4Beeg/viewform?usp=sf_link" class="f-links" target="_blank">Internships</a></li>
<li class="f-li"><a href="https://docs.google.com/forms/d/e/1FAIpQLSe9nr_Aw0fGIqm3_xWhqEzTr3UWdOFz-pvKpQvkAsosORYq9w/viewform?usp=sf_link" class="f-links" target="_blank">Videos</a></li>
<li class="f-li"><a href="https://docs.google.com/forms/d/e/1FAIpQLScOW3hJjxxwzPYL4u51oboc4T1aDtIUEIRa20hKPKu4UlcZAA/viewform?usp=sf_link" class="f-links" target="_blank">Donations/Funds</a></li>
</ul>
</div>
</div>
<div class="footer-links" style="text-align: center;">
<!-- <h7>Connect With Us</h7><br><br> -->
<a href="https://www.facebook.com/codemistic " target="_blank "><i class="icons fa-2x fab fa-facebook "
style="color:#3b5998; "></i></a>
<a href="https://www.instagram.com/codemistic " target="_blank "><i class="icons fa-2x fab fa-instagram "
style="color:#e95950; "></i></a>
<a href="https://www.twitter.com/codemistic " target="_blank "><i class="icons fa-2x fab fa-twitter "
style="color:#8accf5; "></i></a>
<a href="https://www.linkedin.com/company/codemistic " target="_blank "><i
class="icons fa-2x fab fa-linkedin " style="color:#88b3ee; "></i></a>
<a href="https://t.me/codemistic " target="_blank "><i class="icons fa-2x fab fa-telegram "
style="color:#65adda; "></i></a>
<a href="https://www.youtube.com/channel/UCS1Iv_kkgQGDwoXtvrlwlag " target="_blank "><i
class="icons fa-2x fab fa-youtube " style="color:red; "></i></a>
<p class="foot mt-3">© Copyright : <strong>CodeMistic</strong> All Rights Reserved.</p>
</div>
</footer>
<!-- CSS Scripts -->
<script src="https://code.jquery.com/jquery-3.5.1.slim.min.js "
integrity="sha384-DfXdz2htPH0lsSSs5nCTpuj/zy4C+OGpamoFVy38MVBnE+IbbVYUew+OrCXaRkfj "
crossorigin="anonymous "></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js@1.16.0/dist/umd/popper.min.js "
integrity="sha384-Q6E9RHvbIyZFJoft+2mJbHaEWldlvI9IOYy5n3zV9zzTtmI3UksdQRVvoxMfooAo "
crossorigin="anonymous "></script>
<script src="https://stackpath.bootstrapcdn.com/bootstrap/4.5.0/js/bootstrap.min.js "
integrity="sha384-OgVRvuATP1z7JjHLkuOU7Xw704+h835Lr+6QL9UvYjZE3Ipu6Tp75j7Bh/kR0JKI "
crossorigin="anonymous "></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js'></script>
<script src='../side.js'></script>
</body>
</html>