初识

实验一

#include <stdio.h>

int main(int argc, char** argv) {
    printf("my stuno is 202083290262\n  2020,please give me five");
    return 0;
}

实验二

#include <stdio.h>
int main() {
    while (0)
        printf("人间第一流");

    return 0;
}

实验三

math1

#include <stdio.h>
int main() {
    float 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;
}

math2

#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;
}

实验四

#include <stdio.h>
int main() {
    int answer;
    char words[5000];

    printf("在家上学让一些人喜欢一些人忧.\n");
    printf("1.作为一个宅，觉得好，很ok.\n");
    printf("2.不喜，眼瞎，脑子卡...\n");
    printf("3.中间派，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, 500);
    }
    printf("\n");
    printf("当遇到问题时，你会选择：\n");
    printf("1.遇到问题，解决问题，不懂得，搜索学习，逐个攻破.\n");
    printf("2.遇到问题，不高兴，然后没了.\n");
    printf("其他...\n");
    printf("你的选择：");
    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:)\n");
    else if(answer==3){
        printf("请补充说明你的想法:\n");
        getchar();
        gets_s(words);
    }

    return 0;
}

实验总结：我明白了基本框架结构