C Program To Convert Hexadecimal To Decimal

C Program To Convert Hexadecimal To Decimal: In this program, we will use nested for loop to convert hexadecimal to decimal.

C Program To Convert Hexadecimal To Decimal

#include <stdio.h>
#include <math.h>
int main()
{
  char hv[10];
  int len = 0, sum = 0, i, j, p = 0;
  char hexDig[16] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
  printf("Enter the input: ");
  scanf("%s", hv);
  for (i = 0; hv[i] != '\0'; i++)
    len++;
  for (i = len - 1; i >= 0; i--)
  {
    for (j = 0; j < 16; j++)
    {
      if (hv[i] == hexDig[j])
      {
        sum = sum + j * pow(16, p);
      }
    }
    p++;
  }
  printf("%d", sum);
  return 0;
}

Output

Enter the input: A
10
Enter the input: A1
161

Read: C Program To Convert Decimal To Binary