Merge pull request #15 from Unishkhadka/master

Added miscellaneous folder and electricity bill generator

Author: gauravfs-14

Basic Questions/10_prime_numbers.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+
+int main() {
+
+  int n, i, flag = 0;
+  printf("Enter a positive integer: ");
+  scanf("%d", &n);
+
+  // 0 and 1 are not prime numbers
+  // change flag to 1 for non-prime number
+  if (n == 0 || n == 1)
+    flag = 1;
+
+  for (i = 2; i <= n / 2; ++i) {
+
+    // if n is divisible by i, then n is not prime
+    // change flag to 1 for non-prime number
+    if (n % i == 0) {
+      flag = 1;
+      break;
+    }
+  }
+
+  // flag is 0 for prime numbers
+  if (flag == 0)
+    printf("%d is a prime number.", n);
+  else
+    printf("%d is not a prime number.", n);
+
+  return 0;
+}

Basic Questions/readme.md

@@ -412,8 +412,65 @@ Finally, the program prints the output, which is the value of p.
 
 ![output_of_basic_product_of_n_numbers](../outputs/basic_product_of_n_numbers.png)
 
+## 10. WAP to check whether the given number is prime or composite.
+
+### Program
+
+```c
+//WAP to check whether the given number is prime or composite.
+
+#include <stdio.h>
+
+int main() {
+
+  int n, i, flag = 0;
+  printf("Enter a positive integer: ");
+  scanf("%d", &n);
+
+  // 0 and 1 are not prime numbers
+  // change flag to 1 for non-prime number
+  if (n == 0 || n == 1)
+    flag = 1;
+
+  for (i = 2; i <= n / 2; ++i) {
+
+    // if n is divisible by i, then n is not prime
+    // change flag to 1 for non-prime number
+    if (n % i == 0) {
+      flag = 1;
+      break;
+    }
+  }
+
+  // flag is 0 for prime numbers
+  if (flag == 0)
+    printf("%d is a prime number.", n);
+  else
+    printf("%d is not a prime number.", n);
+
+  return 0;
+}
+```
+This C program checks whether the given number is prime or composite.
+
+This program takes an integer as input from the user. 
+If the number is 0 or 1 then the flag is assigned 1.
+Then i is initialized as 2 and then i assigned as the numbers in range (2,n/2).
+If the input goes through a loop where if the integer is divisible by 'i' then 
+the flag is assigned 1 else the flag is assigned to 0. Finally the program checks
+the value of flag. I the flag is 1 the it prints the integer is prime while it 
+prints the integer is not prime if the flag is 0.
+
+For example, the input is seven then this program prints "7 is a prime number".
+
+_output_
+
+![output of basic questions q1](../outputs/basic_prime.png)
+
 <!-- Add new question above this comment -->
 
+
+
 ## License
 
 Released under [MIT](/LICENSE) by [@ComputeNepal](https://github.com/ComputeNepal).

Miscellaneous/1_Electricity_bill.c

@@ -0,0 +1,47 @@
+//A simple program of electricity bill generator
+
+#include<stdio.h>
+#include <stdlib.h>
+
+int main(){
+  int units;
+  float price;
+
+  printf("Enter the units:\t");
+  scanf("%d",&units);
+  system("clear");
+
+  if(units<=20){
+    price=units*4;
+  }
+  else if(units<=50){
+      price=(20*4)+((units-20)*7.3);
+  }
+
+  else if(units<=150){
+      price=((20*4)+(50*7.3))+((units-50)*8.6);
+  }
+  else if(units<=250){
+      price=(20*4+30*7.3+100*8.6)+((units-150)*9.5);
+    }
+  else if(units>250){
+      price=(20*4+30*7.3+100*8.6+100*9.5)+((units-250)*12.5);
+  }
+
+  //you can automate the bill no, date and sc no for advancement
+  printf("~~~NEPAL ELECTRICITY AUTHORITY~~~\n");
+  printf("-----------------------------------\n");
+  printf("\tELECTRICITY BILL\n");
+  printf("-----------------------------------\n\n");   
+  printf("BILL NO:\t843948394\n");
+  printf("BILL DATE:\t2079/12/12\n");
+  printf("BRANCH:\t\tDAMAK\n");
+  printf("-----------------------------------\n");
+  printf("SC NO:\t\t309.11.012A\n");
+  printf("BILL NO:\t843948394\n");
+  printf("TOTAL UNITS:\t%d\n",units);
+  printf("TOTAL AMOUNT:\tRS.%.3f\n",price);
+  printf("-----------------------------------\n");
+  printf("-----------------------------------\n");
+  return 0;
+}

Miscellaneous/readme.md

@@ -0,0 +1,90 @@
+# Miscellaneous 
+
+[![ComputeNepal - learn-c-programming](https://img.shields.io/static/v1?label=ComputeNepal&message=learn-c-programming&color=blue&logo=github)](https://github.com/ComputeNepal/learn-c-programming "Go to GitHub repo")
+[![stars - learn-c-programming](https://img.shields.io/github/stars/ComputeNepal/learn-c-programming?style=social)](https://github.com/ComputeNepal/learn-c-programming)
+[![forks - learn-c-programming](https://img.shields.io/github/forks/ComputeNepal/learn-c-programming?style=social)](https://github.com/ComputeNepal/learn-c-programming)
+
+[![License](https://img.shields.io/badge/License-MIT-blue)](#license)
+[![issues - learn-c-programming](https://img.shields.io/github/issues/ComputeNepal/learn-c-programming)](https://github.com/ComputeNepal/learn-c-programming/issues)
+
+[![contributions - welcome](https://img.shields.io/badge/contributions-welcome-blue)](/CONTRIBUTING.md "Go to contributions doc")
+
+![Learn C Programming](https://repository-images.githubusercontent.com/615587446/9a0d7982-bdb2-4918-8570-ebfff27778ad)
+
+## 1. WAP to build a simple electricity bill generator.
+
+### Program
+```c
+//A simple program of electricity bill generator
+
+#include<stdio.h>
+#include <stdlib.h>
+
+int main(){
+  int units;
+  float price;
+
+  printf("Enter the units:\t");
+  scanf("%d",&units);
+  system("clear");
+
+  if(units<=20){
+    price=units*4;
+  }
+  else if(units<=50){
+      price=(20*4)+((units-20)*7.3);
+  }
+
+  else if(units<=150){
+      price=((20*4)+(50*7.3))+((units-50)*8.6);
+  }
+  else if(units<=250){
+      price=(20*4+30*7.3+100*8.6)+((units-150)*9.5);
+    }
+  else if(units>250){
+      price=(20*4+30*7.3+100*8.6+100*9.5)+((units-250)*12.5);
+  }
+
+  //you can automate the bill no, date and sc no for advancement
+  printf("~~~NEPAL ELECTRICITY AUTHORITY~~~\n");
+  printf("-----------------------------------\n");
+  printf("\tELECTRICITY BILL\n");
+  printf("-----------------------------------\n\n");   
+  printf("BILL NO:\t843948394\n");
+  printf("BILL DATE:\t2079/12/12\n");
+  printf("BRANCH:\t\tDAMAK\n");
+  printf("-----------------------------------\n");
+  printf("SC NO:\t\t309.11.012A\n");
+  printf("BILL NO:\t843948394\n");
+  printf("TOTAL UNITS:\t%d\n",units);
+  printf("TOTAL AMOUNT:\tRS.%.3f\n",price);
+  printf("-----------------------------------\n");
+  printf("-----------------------------------\n");
+  return 0;
+}
+```
+
+This C program allows a user to input total electricity units and generate
+the bill in proper format.
+
+The basic logic of this C program is to take an integer 'units' as input 
+from the user and the if else ladder checks suitable case for the units.
+If the unit is less than or equals to 20 units, then the rate is Rs.4 per 
+unit which is assigned to 'price'. But if the units exceeds 20 and less
+than or equals to 50 then the price of 20 units is added to the price of 
+remaining units. Same case continues untill 250 units. If the unit is more
+than 250 then the total sum price of 250 units is added to price of remaining 
+units. After 250 units the rate is Rs.12.5 per unit even if the unit is way
+heigher.
+
+Finally the bill is generated through a self written format which includes
+Bill no, Bill date, Total units, Total amount,etc.
+
+For example, if the user input is 40 then the bill is generated for 40 units.
+
+_output_
+
+![output of Miscellaneous-Electricity bill generator](../outputs/Miscellaneous_Electricity_bill_output1.png)
+
+![output of Miscellaneous-Electricity bill generator](../outputs/Miscellaneous_Electricity_bill_output2.png)
+

outputs/Miscellaneous_Electricity_bill_output1.png

@@ -31,7 +31,7 @@ repository are welcome.
 | Pointer Questions       | [View Questions](./Pointer%20Questions)                   |
 | Structure Questions     | [View Questions](./Structure%20Questions)                 |
 | File Handling Questions | [View Questions](./File%20Handling%20Questions)           |
-
+| Miscellaneous            | [View Questions](./Miscellaneous/)
 <!-- Add new category to the table -->
 
 ## Contributors