简单的C程序设计

来源：互联网发布：sql必知必会原书第4版编辑：程序博客网时间：2024/05/17 16:14

【例1】按格式要求输入/输出数据

#include "stdio.h"

main()

{

int a,b;

flost x,y;

char c1,c2;

scanf(“a=%d,b=%d”,&a,&b);

scanf(“%f, %e”,&x,&y);

scanf(“&c &c”,&c1,&c2);

printf(“a=%d,b=%d,x=%f,y=%f,c1=%c,c2=%c\n”,a,b,x,y,c1,c2);

}

运行该程序，必须按如下方式在键盘上输入数据

a=3,b=7 ↙

8.5,71.82 ↙

a A ↙

请同学们写出输出结果

【例2】输入三角形三边长，求三角形面积。

#include “math.h”

main()

{

float a,b,c,s,area;

scanf(“%f ,%f,%f”,&a,&b,&c);

s=1.0/2*(a+b+c);

area=sqrt(s*(s-a)*(s-b)*(s-c));

printf(“area=%f”,area);

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