# 202113020023李湘楠实验2实验报告

//test1.c
#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) ); //以当前系统时间作为随机种子·

for (i = 0; i < N; ++i)
{
number = rand() % (R2 - R1 + 1) + R1;//作用：生成学号后三位在586~701的随机整数
printf("20228330%04d\n");
}

return 0;
}//该程序的作用是生成2022级16~18班的5位随机同学的学号

//test2.c
#include <stdio.h>

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

scanf("%d%d%d", &a1, &a2, &a3);//scanf输入变量前未加地址运算符
printf("a1 = %d,a2 = %d,a3 = %d\n", a1, a2, a3);

scanf("%c%c%c", &c1, &c2, &c3);
printf("c1 = %c,c1 = %c,c3 = %c\n", c1, c2, c3);

scanf("%lf%lf", &x, &y);//scanf输入浮点型变量格式应为"%lf",第二个变量输入时未加l
printf("x = %lf,y = %lf\n", x, y);

return 0;
}

//test3_2.c
#include <stdio.h>
#include <math.h>

int main()
{
double x, ans;

while (scanf_s("%lf", &x) != EOF)
{
ans = pow(x, 365);
printf("%.2f的365次方：%.2f\n", x, ans);
printf("\n");
}

return 0;
}

//test3_3.c
#include <stdio.h>
#include <math.h>

int main()
{
double C, F;

while (scanf_s("%lf", &C) != EOF)
{
F = 9 * C /5 + 32;
printf("摄氏度c = %.2f时，华氏度f = %.2f ", C, F);
printf("\n");
}

return 0;
}

//test4.c
#include <stdio.h>

int main()
{
char color;
while (scanf_s("%c",&color)  != EOF)
{
getchar();
if (color == 'r' || color == 'y' || color == 'g')
{
if (color == 'r')
printf("stop!\n");
else if (color == 'g')
printf("go go go\n");
else if (color == 'y')
printf("wait a minate\n");
}

else
printf("something must be wrong...\n");
}

return 0;
}
//test4_2(方法二）
#include <stdio.h>
int main()
{
char color;
while(scanf_s("%c", &color) != EOF)
{
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"); break;
}
}
return 0;
}

//test5.c
#include<stdio.h>
#include<stdlib.h>
#include<time.h>
int main()
{
int luckyday,day, i;
srand(time(0));
luckyday = rand() % 30 + 1;
printf("猜猜2023年4月哪一天会是你的lucky day\n");
printf("开始喽，你有三次机会，猜吧（1~30）： ");
for (i = 1; i <= 3; ++i)
{
scanf_s("%d", &day);
if (day < luckyday)
{
printf("你猜的日期早了，你的luckyday还没到呢\n");
printf("再猜（1~30）：");
continue;
}
else if (day > luckyday)
{
printf("你猜的日期晚了，你的luckyday已经过啦\n");
printf("再猜（1~30）：");
continue;
}
else
printf("哇，猜中了：_\n");
break;
}
printf("\n");
printf("次数用完啦。偷偷告诉你：4月，你的luckyday是%d", luckyday);

return 0;
}

//test6.c
#include <stdio.h>
int main()
{
int line, column, value;
for(line=1;line<=9;++line)
{
for (column = 1; column <= line; ++column)
{
value = line * column;
printf("%dx%d  = %d   ",column,line,value);
}
printf("\n");
}
return 0;
}

//test7.c
#include <stdio.h>
int main()
{
int n,i,j;
printf("input n: ");
scanf_s("%d", &n);
for (j = n; j >= 1; --j)
{
for (i = 1; i <= (n-j); ++i)
printf("   \t");
for (i = 1; i <= (2 * j - 1); ++i)
printf(" o \t");
for (i = 1; i <= (n-j); ++i)
printf("   \t");
printf("\n");

for (i = 1; i <= (n-j); ++i)
printf("   \t");
for (i = 1; i <= (2 * j - 1); ++i)
printf("<H>\t");
for (i = 1; i <= (n-j); ++i)
printf("   \t");
printf("\n");

for (i = 1; i <= (n - j); ++i)
printf("   \t");
for (i = 1; i <= (2 * j - 1); ++i)
printf("I I\t");
for (i = 1; i <= (n - j); ++i)
printf("   \t");
printf("\n");
}
return 0;
} 

posted @ 2023-03-18 15:49  lenmoye  阅读(7)  评论(0编辑  收藏  举报