#include <stdio.h>

int main(){
	char str[100];
	char *p = str;
	FILE *fp;
	fp = fopen("test.dat", "w");
	gets(str);
	
	while(*p != '\0'){
		if(*p >= 'a' && *p <= 'z'){
			*p-=32;
		}
		p++;
	}
	fputs(str, fp);
	fclose(fp);
	return 0;
}