作業(yè)一：輸出
```
int?main()
{
????int?a=0;
????int?b=0;
????int?c=0;
????int?d=0;
????int?e=0;
????printf("請輸入五個整數(shù)；");
????scanf("%d?%d?%d?%d?%d",&a,&b,&c,&d,&e);
????printf("輸出的值是%d?%d?%d?%d?%d",a,b,c,d,e);
????return?0;?
}
```
作業(yè)二：輸出小數(shù)
```
#include?<stdio.h>?
int?main()
{?
??double?A=0.0;?
??double?B=0.0;?
??double?C=0.0;?
??printf("輸入三個值：");?
??scanf("%lf%lf%lf",&A,&B,&C);?
??printf("輸出的值是：%f,%f,%f",A,B,C);?
??return?0;?
??}?
```
作業(yè)三：求正方形的面積
```
#include?<stdio.h>
int?main()
{
?????printf("正方形的面積是%d",6*6);
?????return?0;
}
```
作業(yè)四：
```
#include?<stdio.h>
int?main()
{
????double?A=0.0;
????double?B=0.0;
????printf("請輸入正方形的邊長:?");
????scanf("%lf",&A);
????B=A*A;
????printf("正方形的面積為:?%f",B);
????return?0;
}
```
作業(yè)五：求三個數(shù)的平均數(shù)
#include?<stdio.h>
?int?main()?
{?
??double?a=0.0;?
??double?b=0.0;?
??double?c=0.0;?
??double?d=0.0;?
??printf("請輸入三個值：");?
??scanf("%lf%lf%lf",&a,&b,&c);
??d=(a+b+c)/3;
??printf("平均數(shù)為%f",d);
??return?0;?
}?
