实验1 C语言开发环境使用和数据类型、运算符、表达符

实验1
#include<studio.h>
int main()
{printf(" O \n");printf("<H>\n");printf("I I\n");return 0;
}

实验2
 1 #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; 
}

实验3

#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表示有，输入n或N表示没有）：");
    ans2 = getchar();
    if((ans1== 'y' ||ans1== 'Y' ) && (ans2== 'n' ||ans2== 'N' ))
      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;
}

实验4

#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 = %f\n", x, y);
    
    return 0;
}

 实验5

#include<stdio.h>
int main()
{
    int year;
    int seconds = 1000000000;  
    int seconds_per_minute = 60;
    int minutes_per_hour = 60;
    int hours_per_day = 24;
    int days_per_year = 365;  

    double total_years = (double)seconds / (seconds_per_minute * minutes_per_hour * hours_per_day * days_per_year);
    year = (int)(total_years + 0.5); 
    printf("10亿秒约等于%d年\n", year);
    return 0;
}

实验6

#include<stdio.h>
#include<math.h>
int main()
{
    double x, ans;
    
    scanf("%lf", &x);
    ans = pow(x, 365);
    printf("%.2f的365次方:%.2f\n", x, ans);
    
    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;

}

实验7

#include <stdio.h>

int main()
{
    double celsius, fahrenheit;
    int count;
    
    printf("请输入要转换的温度组数：");
    scanf("%d", &count);
    
    printf("开始输入%d组摄氏度温度：\n", count);
    int i;
    for (i = 1; i <= count; i++)
    {
        printf("请输入第%d组摄氏度温度：", i);
        scanf("%lf", &celsius);
        
        fahrenheit = (9.0 / 5.0) * celsius + 32;
        
        printf("摄氏度：%.2f°C -> 华氏度：%.2f°F\n\n", celsius, fahrenheit);
    }
    
    printf("温度转换完成！\n");
    return 0;
}

 

 

实验8

#include <stdio.h>
#include <math.h>

int main()
{
    double a, b, c, s, area;
    int count;
    
    printf("请输入要计算的三角形组数：");
    scanf("%d", &count);
    
    printf("开始输入%d组三角形三边边长：\n", count);
    int i;
    for(i = 1; i <= count; i++) {
        printf("请输入第%d组三角形的三边(a b c)：", i);
        scanf("%lf %lf %lf", &a, &b, &c);
        
        s = (a + b + c) / 2.0;
        
        area = sqrt(s * (s - a) * (s - b) * (s - c));
        
        printf("a = %.0f, b = %.0f, c = %.0f, area = %.3f\n\n", a, b, c, area);
    }
    
    printf("三角形面积计算完成！\n");
    return 0;
}