实验1 C语言开发环境使用和编程初体验

1 #include <stdio.h>
int main()
{
    printf("my stuno is: 202083290301\n");
    printf("2020,r u crazy?");
    return 0;
}

 

 

#include<stdio.h>
int main() {
    while (0)
        printf("as sa");
    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("在家学习让有些人欢喜有些人愁.\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_s("%d", &answer);
        if (answer == 4) {
            printf("请补充说明你的想法.\n");
            getchar;
            gets_s(words);
        }
        printf("\n");      //换行
        printf("当遇到问题是，你会选择：\n");
        printf("1.遇到问题，解决问题，不懂得，搜索式学习，逐个攻破.\n");
        printf("2.遇到问题，不高兴，然后....就没有然后了.\n");
        printf("3.其他...\n");
        printf("你的选择：\n");
        scanf_s("%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qaq.\n");
        else if (answer == 3) {
            printf("请补充说明你的想法.\n");
            getchar;
            gets_s(words);
        }
            
    return 0;
}