实验1

#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>

int main() 
{
    printf(" O \n");
    printf("<H>\n");
    printf("I I\n");

    return 0;

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() 
{
    float a,b,c;
    scanf("%f%f%f",&a,&b,&c);
    if(a+b>c&&b+c>a&&c+a>b)
        printf("能构成三角形\n");
    else 
        printf("不能构成三角形\n");
        

    return 0;
}

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();
   getchar();
   if((ans1=="y"&&ans2=="y")||(ans1=="Y"&&ans2=="y")||(ans1=="y"&&ans2=="Y")||(ans1=="Y"&&ans2=="Y"))
      printf("\n罗马不是一天建成的，继续保持哦：）\n");
   else
      printf("\n罗马不是一天毁灭的，我们来建设吧\n") ;
      
    return 0;
}  

#define _CRT_SECURE_NO_WARNINGS
#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);
    getchar();
    scanf("%c %c %c", &c1, &c2, &c3);
    printf("c1 = %c, c2 = %c, c3 = %c\n", c1, c2, c3);
    getchar();
    scanf("%lf %lf", &x, &y);
    printf("x = %lf, y = %lf\n", x, y);
    return 0;
}

#include <stdio.h>
#include<math.h>
int main()
{
    int year;
    year = (int)(pow(10, 9) / (3600 * 24 * 365) + 0.5);
    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 F,C;
    while (scanf("%lf", &C) != EOF)
    {
        F = 9 * C / 5 + 32;
        printf("摄氏度c=%.2f时，华氏度f=%.2f\n", C,F);
        printf("\n");
    }
    return 0;
}

#define _CRT_SECURE_NO_WARNINGS

#include <stdio.h>
#include<stdlib.h>
#include <math.h>
int main()
{

    double a, b, c;
    double s, m;
    scanf_s("%lf %lf %lf", &a, &b, &c);
    s = (a + b + c) / 2;
    m = sqrt(s * (s - a) * (s - b) * (s - c));
    printf("a = %lf, b = %lf, c = %lf，area=%.3f\n", a, b, c,m);
    printf("\n");

    while (scanf_s("%lf %lf %lf", &a, &b, &c) != EOF)
    {    s = (a + b + c) / 2;
        m = sqrt(s * (s - a) * (s - b) * (s - c));
        printf("a = %lf, b = %lf, c = %lf，area=%.3f\n",a,b,c, m);
        printf("\n");
        system("pause");
    }
    return 0;
}