Question

How to convert string to hexadecimal in C

Answer 1

#include <stdio.h>
#include <string.h>
   
int main()
{
    unsigned char str[32] = "C Programming", hex[128] = "";
    int j = 0, size = strlen(str);;
  
    for (int i = 0; i < size; i++, j += 3) { 
        sprintf((char*)hex + j, "%0X%c", str[i], ' ');
    }
      
    hex[j] = '\0'; 
       
    printf("%s\n", hex);
  
    return 0;
}
  
  
 
  
/*
run:
  
43 20 50 72 6F 67 72 61 6D 6D 69 6E 67
  
*/

 

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