实验二

实验任务1

#include <stdio.h>
#include <stdlib.h>
#include <time.h>

#define N 5
#define R1 586
#define R2 701

int main()
{
    int number;
    int i;

    srand(time(0));

    for(i=0;i<N;++i)
    {
        number=rand()%(R2-R1+1)+R1;
        printf("202283300%04d\n",number);
    }

    system("pause");
    return 0;
    
}

Q1：获得一个R1到R2的随机数

Q2：生成一串与时间有关的随机数

实验任务2

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

 

 

 

实验任务3

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

int main()
{
    double x,ans;

    scanf("%lf",&x);
    ans=pow(x,365);
    printf("%.2f的365次方：%.2f\n",x,ans);
    system("pause");

    return 0;
}

实验任务3-2

#include <stdio.h>
#include <math.h>
#include <stdlib.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");
    }
    system("pause");

    return 0;
}

实验任务3-3

#include <stdio.h>
#include <stdlib.h>
#include <math.h>
int main()
{
    int c;
    double f,x;

    while (scanf_s("%d", &c))
    {
        f = 9.0 / 5 * c + 32;
        x = c;
        printf("摄氏度c=%.2lf时，华氏度f=%.2lf", x, f);
        printf("\n");
    }

    system("pause");
    return 0;
}

实验任务4

#include <stdio.h>
#include <stdlib.h>
int main()
{
    char x;
    while(x = getchar())
    {
        getchar();
        if (x == 'r')
        printf("stop!\n");
        else if (x == 'g')
             printf("go go go\n");
             else if (x == 'y')
             printf("wait a minute\n");
             else
             printf("some thing must be wrong\n");
            
        
    }
    return 0;
}

实验任务5

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main()
{
    int m,n,i;
    srand(time(NULL));
    i = 1;
    n = rand() % 30+1;
    m = 0;
    printf("猜猜2023年4月哪一天会是你的lucky day\n开始喽，你有三次机会，猜吧(1~30):");
    
        for (; i <= 3; i++) {
            scanf_s("%d", &m);
            if (m == n) {
                printf("哇，猜中了:)\n");
                break;
            }
            else if (m < n)
                printf("你猜的日期早了，你的lucky day还没到呢\n");
            if (m > n)
                printf("你猜的日期晚了，你的lucky day已经过啦\n");
    }
        printf("次数用完啦，偷偷告诉你：4月，你的lucky day是%d号", n);

    return 0;
}

 

 

 

实验任务6

#include <stdio.h>
int main()
{
    int column,line,value;
    column = 1;
    line = 1;
    value = column * line;
    for(column=1;column<=9;column++)
    {
        for (line=1; column >= line;line++) {
            value = column * line;
            printf("%d*%d=%d  ", column, line, value);
            
        }
    printf("\n");
    }
    return 0;
}

实验任务7

#include <stdio.h>
int main()
{
    int n;
    printf("input n:");
    scanf_s("%d", &n);
    for (int i = 1; i <= n; i++) {
        for (int k = 1; k <= 3; k++) {
            for (int j = 1; j <= i - 1; j++) {
                printf("     ");
            }
            for (int j = 1; j <= 2 * (n - i) + 1; j++) {
                if(k==1)
                    printf(" O   ");
                if(k==2)
                    printf("<H>  ");
                if(k==3)
                    printf("I I  ");
            }
            printf("\n");
        }
    }
    return 0;
}