#include<stdio.h>
#include<string.h>
int main(){
char str[25];
int i;
printf("Enter the string:");
scanf("%s",str);
for(i=0;i<=strlen(str);i++){
if(str[i]>=97&&str[i]<=122)
str[i]=str[i]-32;
}
printf("\nUpper Case String is: %s",str);
return 0;
}
Enter the string:aimtocode.com Upper Case String is: AIMTOCODE.com --------------------------------