实验一

//a simple c program
#include<stdio.h>
int main(){
    printf("202083450090\n");
    printf("lazy,crazy,angry");
    return 0;
    
    
    
    
    
    
}

//循环打印字符
#include<stdio.h>
int main(){
    while(1)
    printf("i miss you");
    return 0;
} 

//循环打印字符
#include<stdio.h>
int main(){
    while(0)
    printf("i miss you");
    return 0;
} 

//用c语言实现简单的算术运算程序
#include<stdio.h>
int main(){
    int x,y;//定义2个整形变量
    int r1,r2,r3,r4;
    x=1;
    y=2;
    r1=x+y;
    r2=x-y;
    r3=x*y;
    r4=x/y;
    printf("r1=%d\n",r1);//r1结果 
    printf("r2=%d\n",r2);//同下 
    printf("r3=%d\n",r3);
    printf("r4=%d\n",r4);
    return 0;
     
} 

//用c语言实现简单的算术运算程序
#include<stdio.h>
int main(){
    float x,y;//定义2个float形变量
    float r1,r2,r3,r4;
    x=1;
    y=2;
    r1=x+y;
    r2=x-y;
    r3=x*y;
    r4=x/y;
    printf("r1=%f\n",r1);//r1结果 
    printf("r2=%f\n",r2);//同下 
    printf("r3=%f\n",r3);
    printf("r4=%f\n",r4);
    return 0;
     
}