Program to Convert Hexadecimal to Decimal - Hexadecimal Conversion Program

Hexadecimal number system is base 16 number system in which the digits used are 0 to 9 and A to F. Here is a c program to convert hexadecimal number to decimal number system.

#include<stdio.h>

#include<string.h>



int HexToDec(char* hex)

{

int dec=0,base=1,i,d;

char c;

i=strlen(hex)-1;

while(i>=0)

{

c=*(hex+i);

if(c>='A'&&c<='F')

 d=10+c-'A';

else if(c>='a'&&c<='f')

 d=10+c-'a';

else

 d=c-'0';

dec+=d*base;

base*=16;

i--;

}

return dec;

}



void main()

{

char input[20];

printf("\nEnter the hexadecimal number\n");

scanf("%s",&input);

printf("Corresponding decimal number is: %d",HexToDec(input));

}