#include <stdio.h>
#include <ctype.h>

void uppercase(FILE* in_file, FILE* out_file) {
    int c;
    while ((c = fgetc(in_file)) != EOF) {
        fputc(toupper(c), out_file);
    }
}

int main() {
    FILE* in_file = stdin;
    FILE* out_file = stdout;
    uppercase(in_file, out_file);
    return 0;
}