[编程入门]宏定义的练习-题解(C语言代码)

#include<stdio.h>
#include<math.h>
int main()
{
	double a,b,c,S,area;
	scanf("%lf%lf%lf",&a,&b,&c);
	S=(a+b+c)/2;
	area=sqrt(S*(S-a)*(S-b)*(S-c));
	printf("%0.3lf",area);
	return 0;
}

#include<stdio.h>
int main()
{
	int a,b,c;
	int t;
	scanf("%d%d",&a,&b);
	if(b>a)
	{
		c=a;
		a=b;
		b=c;
	}
	t=a%b;
	printf("%d",t);
	return 0;
}

#include<stdio.h>
#define Yu(x,y) x=x%y
int main()
{
	int a, b;
	scanf("%d %d", &a, &b);
	printf("%d", Yu(a, b));
	return 0;
}

为啥写getchar

#include <stdio.h>

#define GetRemainder(a ,b) {a % b}

int main(void)
{
    int data_1 = 0, data_2 = 0;
    scanf("%d%d",&data_1 ,&data_2);
    int c = GetRemainder(data_1 ,data_2);
    printf("%d\n" ,c);
    return 0;
}

#include<stdio.h>
#define y(a,b) a%b
int main(){
	int a,b;
	scanf("%d%d",&a,&b);
	printf("%d",y(a,b));
}

#include<stdio.h>
#define NUM(a,b) a=a%b;
int main()
{
	int a,b;
	printf("plesse input tow numbers");
	scanf("%d,%d",&a,&b);
	NUM(a,b);
	printf("%d",a);
}

#include<stdio.h>
#include<string.h>
#define swap(a,b,c) {c=a%b;}

int main() {
	int i,j,c;
	scanf("%d %d",&i,&j);
	swap(i,j,c);
	printf("%d",c);


	}