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("<H>  <H>\n");
    printf("I I  I I\n");

    return 0;
}

 

#include <stdio.h>
int main()
{
    double a, b, c;
    scanf_s("%lf%lf%lf", &a, &b, &c);
    if ((a + b > c and c>a and c>b) or (a + c > b and b>a and b>c) or (b + c > a and a>b and a>c))
        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表示没有）：");
    ans2 = getchar();

    if ((ans1 == 'y' or ans1 == 'Y') and (ans2 == 'y' or 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;
}

 输完第一个问题的答案后直接结束，无法输入第二个问题的答案。为了把之前输入的答案删掉，不占空间。

 

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
int main()
{
    double x, y;
    char c1, c2, c3;
    int a1, a2, a3;

    scanf_s("%d%d%d", &a1, &a2, &a3);   //已改正,在a1、a2、a3前加&
    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_s("%lf,%lf", &x, &y);  //已改正，从"%f"改为"%lf"
    printf("x = %f,y = %lf\n", x, y);

    return 0;
}

 

 

#include <stdio.h>
#include <math.h>
int main()
{
    int year;
    int s;

    scanf_s("%d", &s);
    year = (int)round((double)s / 60 / 60 / 24 / 365);


    printf("10亿秒约等于%d年\n",year);
    return 0;
}

 

#define _CRT_SECURE_NO_WARNINGS 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);
    }

    return 0;
}

 

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <math.h>

int main()
{
    double f, c;
    
    while (scanf("%lf", &c,&f) != EOF)
    {
        
        f = (c*9/5) + 32;
        printf("摄氏度c = %.2f时，华氏度f = %.2f\n",c,f);
        printf("\n");

    }
}

 

 

#define _CRT_SECURE_NO_WARNINGS 1
#include <stdio.h>
#include <math.h>

int main()
{
    double s,area;
    int a, b, c;

    while (scanf("%d%d%d",&a,&b,&c) != EOF)
    {
        s = (a + b + c) / 2;
        double area = sqrt(s*(s - a)*(s - b)*(s - c));
        printf("a = %d,b = %d,c = %d,area = %.f3\n",a,b,c,area);
        printf("\n");
    }
    return 0;
}