实验1

# include <stdio.h>
int main() {
    printf("202083290316\n");
    printf("好好学习，别做咸鱼");
    return 0;

 

 

#include <stdio.h> 
int main() {
    while(1)
       printf("Yvonne");

    return 0;
}

 

 

 

#include <stdio.h> 
int main() {
    while(0)
       printf("0 1");

    return 0;
}

 

 

#include <stdio.h>
int main() {
    int x,y;
    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);
    printf("r2=%d\n",r2);
    printf("r3=%d\n",r3);
    printf("r4=%d\n",r4);
    
    return 0;
}

 

 

#include <stdio.h>
int main() {
    float x,y;
    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);
    printf("r2=%f\n",r2);
    printf("r3=%f\n",r3);
    printf("r4=%f\n",r4);
    
    return 0;
}

 

 

#include <stdio.h>
int main() {
    int answer;
    char words[5000];
    printf("在家上学让一些人欢喜一些人忧.\n");
    printf("1.作为一个宅,社恐,觉得这样很好.有网络,自主学习,很ok.\n");
    printf("2.不喜,不喜,很不喜.眼睛快瞎了.脑壳有点卡...\n");
    printf("3.中间派.不知道.说不清.\n");
    printf("4.其他...\n");
    printf("你的选择:  ");
    scanf("%d", &answer);
    if(answer == 4) {
        printf("请补充说明你的想法: \n");
        getchar(); 
        gets(words);
    }
    printf("\n");
    printf("当遇到困难时,你会选择:\n");
    printf("1.遇到问题,就解决问题.不懂的,搜索式学习,逐个攻破.\n");
    printf("2.遇到问题,不高兴.然后,...,没有了.\n");
    printf("3.其它...\n");
    printf("你的选择:  ");
    scanf("%d", &answer);
    
    if(answer == 1)
       printf(":)\n");
    else if(answer == 2)
       printf("这样不能解决问题啊...我们选择1好不好:)\n");
    else if(answer == 3) {
        printf("请补充说明你的想法: \n");
        getchar();
        gets(words);
    }
    return 0;
}