实验1

试验任务1.2

 

代码

#include <stdio.h> 
int main()
{
    printf(" o      o \n");
    printf("<H>    <H>\n");
    printf("I I    I I\n");
    
    return 0;
}

实验任务1.1

代码

#include <stdio.h> 
int main()
{
    printf(" o      o \n");
    printf("<H>    <H>\n");
    printf("I I    I I\n");
    
    return 0;
}

试验任务2

代码

#include <stdio.h>

int main()
{
    int n, sum;
    scanf("%d", &n)
    sum = ((n+1)*n/2)
    printf("sum = %d\n", sum)
}

试验任务3

代码

#include <stdio.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);
    
    return 0;    
}

试验任务4

代码

#include <stdio.h>

int main()
{
    int x, 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);
    
    return 0;
    
    
}

实验任务5

代码

#include <stdio.h>

int main()
{
    float a, b, c;
    
    scanf("%f%f%f", &a, &b, &c);
    
    if(a + b > c)
        printf("能够成三角形\n");
    else
        printf("不能够成三角形\n");
    
    return 0;
}

实验任务6

代码

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

int main()
{
    int year,s ;
    long double k;
    s = 1e+9;
    k=s/60/60/24/365;
    year=(int)(k+0.5);
    printf("十亿秒约等于%d年\n",year);
      return 0;    
} 

试验任务7

代码

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

{
    int n;
    n=rand()%41+60;
    printf("n = %d\n", n);
    return 0;
}

实验任务8

代码

#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表示木有敲) : ");
    ans2 = getchar();
    
    if ((ans1 == 'Y' || ans1 == 'y')&& (ans2 == 'Y'|| 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;
}