Change string into upper case | STRUPR | C program

#include <stdio.h>
#include <string.h>
 
int main()
{
   char string[1000];
 
   printf("Input a string\n");
   gets(string);
 
   printf("string in upper case: \"%s\"\n",strupr(string));
 
   return  0;
}

Bhuvan Arora