// type.c
#include <stdio.h>

int main(void)
{
    int a = 10;
    float b = 1.5;
    double c = 1.5;

    printf("a: %d\n",a); // => a: 10
    printf("b: %f\n",b); // => b: 1.500000
    printf("c: %lf\n",c); // => c: 1.500000

    return 0;
}