What is the output of this code?

Question

#include <stdio.h>
#include <string.h>
int main() {

char a[] = {'h','e','l','l','o','\0'};
char b[] = "world";
if(strlen(a) == strlen(b)){
printf("%s", strupr(a));
} else {
printf("%s", b);
}
return 0;
}

Answer 1

HELLO
Because the length of a is equal to the length of b, the program prints the strupr (uppercase) of a, which is HELLO.