实验1

 

// 打印一个字符小人

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

　　

#include <stdio.h>
int main() {
    printf(" O     O \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; 
} 

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;
    
}

// 测试你是哪一类学者

#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. 其他...\n");
    printf("你的选择； ");
    scanf("%d", &answer);
    if(answer == 4) {
        printf("请补充你的想法： \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. 其他...\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("请补充你的想法: \n");
        getchar();
        gets(words);
    }    
    
    return 0;
    
}