实验1
#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("
printf("I I I I\n");
eturn 0;
}`

`#include <stdio.h>
int main()
{
double a, b, c;
scanf("%lf%lf%lf", &a, &b, &c);
if(a+b>c && a+c>b && b+c>a)
printf("能构成三角形\n");
else
printf("不能构成三角形\n");
return 0;
}`



`#include <stdio.h>
int main()
{
char ans1, ans2;
printf("每次课前认真预习,课后及时复习了没?(输入Y或y表示有,输入n或N表示没有):");
ans1 = getchar();
getchar();
printf("\n动手敲代码实践了没?(输入Y或y表示敲了,输入n或N表示没敲):");
ans2 = getchar();
if ((ans1 == 'y' || ans1 == 'Y') && (ans2 == 'Y' || ans2 == 'y'))
printf("\n罗马不是一天建成的,继续保持哦:)\n");
else
printf("\n罗马不是一天建成的,我们来建设吧\n");
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("a1 = %d, a2 = %d, a3 = %d\n", a1, a2, a3);
scanf("%c%c%c", &c1, &c2, &c3);
printf("c1 = %c, c2 = %c, c3 = %c\n", c1, c2, c3);
scanf("%lf,%lf", &x, &y);
printf("x = %f, y = %lf\n", x, y);
return 0;
}`

`#include <stdio.h>
int main()
{
int year;
year = (int)(1e9 / 31536000);
printf("10亿秒约等于%d年\n", year);
return 0;
}`

`#include<stdio.h>
include<math.h>
int main()
{
double x,ans;
while(scanf("%lf",&x)!=EOF)
{
ans=pow(x,365);
printf("%.2f的365次方:%.2f\n",x,ans);
printf("\n");
}
return 0;
}#include<stdio.h>
include<math.h>
int main()
{
double c,f;
while(scanf("%lf",&c)!=EOF)
{
f=c/5*9+32;
printf("摄氏度c= %f时,华氏度f=%f\n",c,f);
printf("\n");
}
return 0;
}`

`#include<stdio.h>
include<math.h>
int main()
{
double a,b,c,s,area;
while(scanf("%lf%lf%lf",&a,&b,&c)!=EOF)
{
s=(a+b+c)/2;
area=sqrt(s*(s-a)*(s-b)*(s-c));
printf("a=%.0f时,b=%.0f,c=%.0f,area=%.3f\n",a,b,c,area);
printf("\n");
}
return 0;
}`

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