实验2

task1

源代码

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

#define N 5
#define R1 663
#define R2 701

int main()
{
    int number, i;

    srand(time(0));

    for (i = 0; i < N; ++i)
    {
        number = rand() % (R2 - R1 + 1) + R1;
        printf("20228330%04d\n", number);
    }
    return 0;
}

实验结果

task2

源代码

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

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


int main()
{
    double x, y;
    char c1, c2, c3;
    int a1, a2, a3;


    scanf_s("%d%d%d", &a1, &a2, &a3);
    getchar();
    //printf("a1=%d,a2=%d,a3=%d\n", a1, a2, a3);

    //c1 = getchar();
    //c2 = getchar();
    //c3 = getchar();
    scanf_s("%c%c%c", &c1,1, &c2,1, &c3,1);
    getchar();
    //printf("c1=%c,c2=%c,c3=%c\n", c1, c2, c3);

    scanf_s("%lf%lf", &x, &y);

    printf("a1=%d,a2=%d,a3=%d\n", a1, a2, a3);
    printf("c1=%c,c2=%c,c3=%c\n", c1, c2, c3);
    printf("x=%lf,y=%lf\n", x, y);
    return 0;
}

实验结果

task3-3

源代码

#include<stdio.h>
//#include<stdlib.h>
//#include<time.h>
#include<math.h>
int main()
{
    double c, f;
    while (scanf_s("%lf", &c) != EOF) {

        f = (9.0 / 5.0) * c + 32;
        printf("摄氏度c=%lf时，华氏度f=%lf\n", c, f);

    }

    return 0;
}

实验结果

task4

源代码

#include<stdio.h>
#include<stdlib.h>
//#include<time.h>
//#include<math.h>
int main() {
    char color;
    //color = getchar();
    //getchar();
    
    while (scanf_s("%c",&color,1) != EOF) {
        //getchar();
        //color = getchar();
        switch (color)
        {
        case'r':printf("STOP!\n"); break;
        case'g':printf("GO GO GO!\n"); break;
        case'y':printf("WAIT A MINUTE!\n"); break;
        default:printf("something must be wrong!\n");
        }
        getchar();
    }
    return 0;
} 

实验结果

task5

源代码

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

#define N 1
#define R1 1
#define R2 30



int main()
{
    int number,i,j;
    int flag;
    flag = 1;
    srand(time(0));
    number = rand() % (R2 - R1 + 1);
    printf("猜猜2023年4月哪一天是你的luckyday\n");
    printf("开始喽，你有三次机会，猜吧（1-30）：");
    for (i = 1; i < 4; ++i)
    {
        scanf_s("%d", &j);

        if (number == j) {
            printf("哇，你猜中了\n");
            flag == 0;
            continue;

        }
        else if (number > j) {
            printf("你猜的日期早了，你的lucky day还没到呢\n");
            printf("再猜：");
            continue;
        }
        else(number < j);
        {

            printf("你猜的日期晚了，你的lucky day已经过了\n");
            printf("再猜：");
            continue;
        }
    }
        if (flag = 1)
            printf("次数用完了，偷偷告诉你，4月你的luckyday是%d\n", number);

    return 0;
}

实验结果

task6

源代码

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

int main() {
    int i, j, line, column;
    int value;
    line = 1;
    column = 1;
    value = line * column;
    scanf_s("%d", &i);
    for (line = 1; line <= i; line++) {
        for (column = 1; column <= line; ++column) {
            //printf("*");
            value = line * column;
            printf("%d x %d = %d\t", column, line, value);
            //printf("\n");
        }
        printf("\n");
    }



    return 0;
}

实验结果

task7

源代码

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

int main() {
 int n, i,j,a,line;
 printf("请输入行数line:");
 scanf("%d", &line);
 n=2*line-1;
 i=n;
  while ( i >=0) {
   for (a = 0; a <=(n- i)/2; a++) {
    printf("\t");
   }
   for (j = 1; j <= i; j++) {
    printf("  o \t");
   }
   printf("\n");

   for (a = 0; a<=(n- i)/2; a++) {
    printf("\t");
   }
   for (j = 1; j <= i; j++) {
    printf(" <H>\t");
   }
   printf("\n");
   
   for (a= 0; a<=(n- i)/2; a++) {
    printf("\t");
   }
   for (j = 1; j <= i; j++) {
    printf(" I I\t");
   }
   printf("\n");
   printf("\n");
   i=i-2;
  }
 
 return 0;
}

实验结果