实验1

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

return 0;
}

#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() {

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(){
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("请补充说明你的想法: \n");
getchar();
gets(words);
}

printf("\n");
printf("当遇到问题时你会:\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("请补充说明你的想法:\n");
getchar();
gets(words);

}

return 0;
}