# 实践一

试验任务一#include<stdio.h>
#include<stdlib.h>
int main()
{
printf("o \n");
printf("<H>\n");
printf("I I\n");

system("pause");

return 0;
}

试验任务2#include<stdio.h>
#include<stdlib.h>
int main()
{
int n,sum;
scanf("%d", &n);
sum=n*(n+1)/2;
printf("sum = %d\n", sum);

    system("pause");

return 0;
}

#include<stdio.h>
#include<stdlib.h>
int main()
{
int a, b, t;

a = 3;
b = 4;
printf("a = %d, b= %d\n", a, b);

t = a;
a = b;
b = t;
printf("a = %d, b = %d\n", a, a);

system("pause");

return 0;
}

#include<stdio.h>
#include<stdlib.h>
int main()
{
intx, t, m;

x = 123;
printf("x = %d\n", x);

t=0;

m = x % 10;
t = t * 10 + m;
x = x / 10;

m = x % 10;
t = t * 10 + m;
x = x / 10;

m = x % 10;
t = t * 10 + m;
x = x / 10;

printf("t = %d\n", t);

system("pause");

return 0;
}
#include<stdio.h>
#include<stdlib.h>
int main()
{
int a, b, t;

a = 3;
b = 4;
printf("a = %d, b = %d\n", a, b);

t = a;
a = b;
b = t;
printf("a = %d, b = %d\n", a, b);

system("pause");

return 0;
}

#include<stdio.h>
#include<stdlib.h>
int main()
{
float a, b, c;

scanf("%f%f%f", &a, &b, &c);
if (a+b>c && abs(a-b)<c)
printf("能构成三角形\n");
else
printf("不能构成三角形\n");

system("pause");

return 0;
}

#include<stdio.h>
#include<stdlib.h>
int main()
{
int year;
year = 10^9 / 60 / 60 / 24 / 365;

printf("十亿秒约等于%d\n", year);

system("pause");

return 0;
}

#include<stdio.h>
#include<stdlib.h>
int main()
{
int n;

n = rand() % 41 + 60;

printf("n = %d\n", n);

system("pause");

return 0;
}

#include<stdio.h>
#include<stdlib.h>
int main()
{
char ans1, ans2;

printf("课前预习了吗？（输入Y或者y表示有，输入N或者n表没有）");
ans1 = getchar();

getchar();

printf("\n动手实践了吗？（输入Y或者y表示有，输入N或者n表没有）");
ans2 = getchar();

if ((ans1=='Y'||ans1=='y')&&(ans2=='Y'| ans2=='y'))
printf("\n罗马不是一天建成的\n");
else
printf("\n罗马不是一天毁灭的\n");

system("pause");

return 0;
}

posted @ 2023-03-08 21:43  微笑王子  阅读(16)  评论(0编辑  收藏  举报