第二次作业

#include<stdio.h>
main()
{
int a=5;
int b=7;
printf("%d %d\n",a,b);
}

  

 

 

#include<stdio.h>
main()
{
float a=5.3;
double b=6.53;
printf("%f %lf\n",a,b);
}

  

 

 

#include<stdio.h>
main()
{
char cl='A';
printf("%c--%d\n",cl,cl);
}

  

 

 

#include<stdio.h>
main()
{
int a=6;
float b=7.68;
printf("%d\n",a+(int)b);
}

  

 

 

#include<stdio.h>
main()
{
int a,b,c;
  a=5;
  b=7;
  c=a;
  a=b;
  b=c;
  printf("%d %d \n",a,b);
}

  

 

 

#include<stdio.h>
main()
{
int length,width,area,c;
printf("请输入长和宽用空格分开");
scanf("%d %d %d",&length, &width);
area=length*width;
printf("面积是%d",area);
c=2*(width+length);
printf("周长是%d",c);
}

  

 

posted @ 2021-10-14 22:59  微笑|哈哈  阅读(25)  评论(0)    收藏  举报