C Program to Convert a String to Uppercase

program:

#include <stdio.h>
#include <string.h>
int main()
{
   char string[100];
   printf("Input a string to convert to lower case\n");
   gets(string);
   printf("Characters in Uppercase: \"%s\"\n",strupr(string));
   // strupr is used to convert lowercase to uppercase
   return  0;
}

output:

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