// Convert a string to uppercase
// string_to_upper.c
//
// This program was written by YOUR-NAME-HERE (zXXXXXXX)
// on INSERT-DATE-HERE

#include <stdio.h>

void string_to_upper(char *buffer);

int main(int argc, char *argv[]) {

    char str[] = "Seventeen...  SEVENTEEN, I SAY!";
    string_to_upper(str);
    printf("%s\n", str);
    return 0;
}

// Convert the characters in `buffer` to upper case
void string_to_upper(char *buffer) {
    // YOUR CODE GOES HERE!
}