第一次作业3

#include<stdio.h>
int main() {
    int x, y;
    int r1, r2, r3, r4;
    x = 1;
    y = 2;
    r1 = x + y;
    r2 = x - y;
    r3 = x * y;
    r4 = x / y;
    
    printf("r1=%d\n", r1);
    printf("r2=%d\n", r2);
    printf("r3=%d\n", r3);
    printf("r4=%d\n", r4);
    return 0;
}

 

 

 

 

#include<stdio.h>
int main() {
    float x, y;
    float r1, r2, r3, r4;
    x = 1;
    y = 2;
    r1 = x + y;
    r2 = x - y;
    r3 = x * y;
    r4 = x / y;

    printf("r1=%f\n", r1);
    printf("r2=%f\n", r2);
    printf("r3=%f\n", r3);
    printf("r4=%f\n", r4);
    return 0;
}