#include <stdio.h>
#include <ctype.h>
int main()
{
    char s[] = "mech b is the best";
    int i = 0;
    while(s[i])
    {
      putchar(toupper(s[i]));
      i++;
    }
    return 0;
}
#include <stdio.h>
#include <ctype.h>
int main()
{
    char s[] = "mech b is the best";
    int i = 0;
    while(s[i])
    {
      putchar(toupper(s[i]));
      i++;
    }
    return 0;
}