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Author: DeveloperNA

NumConversions.c

@@ -0,0 +1,111 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <math.h>
+
+int revDigits(int n, int zeros)
+{
+    int rev = 0;
+
+    while(n >0){
+       rev = rev * 10 + n % 10;
+       n = n /10;
+    }
+    rev = rev * pow(10, zeros);
+    return rev;
+}
+
+int count(int bin)
+{
+    int nDigits = floor(log10(abs(bin))) + 1;
+    return nDigits;
+}
+
+char *revChars(char *hex, int length)
+{
+    int i=length-1, j=0;
+    char *rev = (char*)malloc(length+1 * sizeof(char));
+
+    while(i >= 0){
+        rev[j] = hex[i];
+        j++; i--;
+    }
+
+    rev[j] = '\0';
+    return rev;
+}
+
+int decimalToBinary(int number)
+{
+  
+    int bin = 0;
+    int totLength =0;
+    while(number > 0){
+        bin = bin * 10 + number % 2;
+        number = number/2; 
+        totLength++;
+    }
+    int zeros = totLength - count(bin);
+
+    return revDigits(bin, zeros);
+}
+
+int decimalToOctal(int number)
+{
+    int oct = 0;
+    int totLength=0;
+
+    while(number > 0){
+        oct = oct * 10 + number % 8;
+        number = number / 8;
+        totLength++;
+    }
+    int zeros = totLength - count(oct);
+
+    return revDigits(oct, zeros);
+}
+
+char* decimalToHexa(int number)
+{
+    int i=0, j;
+    
+    char  *hex = (char*)malloc(80*sizeof(char));
+    char hexcodes[6][2] = {"A", "B", "C", "D", "E", "F"};
+    
+    while(number > 0){
+
+        if(number%16 > 9)
+        {
+            hex[i] = hexcodes[(number%16)%10][0];
+        }
+        else
+        {
+            hex[i] = (number % 16) + 48 ; 
+        }
+
+        number = number / 16;
+        i++;
+    }
+    hex[i] = '\0'; 
+    return revChars(hex, i);
+}
+
+int main()
+{
+    int i, number, pos, bin, oct;
+    char* hex;
+    printf("Enter the number");
+    scanf("%d", &number);
+
+    // printf("Enter the position to set bit");
+    // scanf("%d",&pos);
+
+    bin = decimalToBinary(number);
+    oct = decimalToOctal(number);
+    hex = decimalToHexa(number);
+
+    printf("Binary :%d\n", bin);
+    printf("Octal :%d\n", oct);
+    printf("Hexadecimal :%s", hex);
+
+    return 0;
+}