实验一

#include<stdio.h>
int main(){
    printf(" 0 \n");
    printf("<H>\n");
    printf("I I\n");
    printf("\n") ;
    printf(" 0 \n");
    printf("<H>\n");
    printf("I I\n");
    
    return 0;
}

 

#include<stdio.h>
int main(){
    printf(" 0        0\n");
    printf("<H>      <H>\n");
    printf("I I      I I\n");

    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 n, r1, r2, r3, r4;
    
    n = 100;
    
    r1 = n*(n+1)/2;
    r2 = (n+1)*n/2;
    r3 = n/2*(n+1);
    r4 = (n+1)/2*n;
    
    printf("n = %d\n", n);
    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(){
    int n, r1, r2, r3, r4;
    
    n = 101;
    
    r1 = n*(n+1)/2;
    r2 = (n+1)*n/2;
    r3 = n/2*(n+1);
    r4 = (n+1)/2*n;
    
    printf("n = %d\n", n);
    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(){
    double x, y;
    char c1, c2, c3;
    int a1, a2, a3;
    
    scanf("%d%d%d", &a1,&a2,&a3);
    printf("%d,%d,%d\n",a1 ,a2, a3);
    scanf("%c%c%c", &c1, &c2, &c3);
    printf("%c%c%c\n", c1, c2, c3);
    scanf("%lf %lf",&x,&y);
    printf("%lf,%lf\n",x,y);
    return 0;
} 

 

#include <stdio.h>
int main(){  
    int a1, a2;
    char c1, c2;
    
    scanf("%d%c%d%c", &a1, &c1, &a2, &c2);
    printf("a1 = %d, a2 = %d\n", a1, a2); 
    printf("c1 = %c, c2 = %c\n", c1, c2);
    
    return 0;
}

 

#include <stdio.h>
int main() {
    int answer;
    char words[5000];
    printf("网课学习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. 其它...\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("当遇到问题时, 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;
}