C语言基础题，用scanf与printf

Question

![img](https://img-mid.csdnimg.cn/release/static/image/mid/ask/924337296796172.jpg "#le各位大佬们帮Bang忙

Answer 1

#include <stdio.h>


int main() {

    float a;
    double b;
    scanf("%f, %lf", &a, &b);

    float a2 = a * a;
    double b2 = b * b;
    printf("%.2e %10.3f\n", a2, a2);
    printf("%e %.2lf", b2, b2);

    return 0;
}