#include <stdio.h>
#include <math.h>

int main(void) {
	float f = 1.10;
	float truncado = (f - trunc(f)) * 10;
	printf("Truncado: %f\n", truncado);
	float mod = fmodf(truncado, 1.0f);
	printf("Mod: %f\n", mod);
	if (mod != 0){
		printf("%.2f", f);
	}
	else{
		printf("%.1f", f);
	}
	return 0;
}