C语音如何定义add函数求和？

Question

答案错误了好几次

Answer 1

#include <stdio.h>
 
double add(double a, double b)
{
    return a+b;
}
 
int main()
{
    double a, b, c;
    scanf ("%lf%lf", &a, &b);
    c = add(a, b);
    printf ("%lf+%lf=%lf\n", a, b, c);
    return 0;
}