❤️学弟学妹要的❤️大学生必备C语言基础练习题目来了（三）（建议收藏哦）❤️

刺骨的言语ヽ痛彻心扉 2022-09-11 03:18 15阅读 0赞

**题目1. 已有一个按升序排好的整型数组，要求输入一个数，查找数组中是否有此数；若有，将其删除；若没有，输出”Not exists!”。编写一个程序实现。**

**流程图：**

![image-20210911160840126][]

**实现代码：**

#include<stdio.h>
    int n, i, j = 0,
    a[10] = {  1,2,3,4,5,6,7,8 };
    void delet(int s)
    { 
    	for (s; s < 8; s++)
    	{ 
    		a[s] = a[s + 1];
    	}
    }
    int main()
    { 
    	printf("请输入n的值¦：");
    	scanf("%d", &n);
    	for (i = 0; i < 8; i++)
    	{ 
    		if (n == a[i])
    		{ 
    			delet(i);
    			for (i = 0; i < 7; i++)
    			{ 
    				printf("%d ", a[i]);
    			}
    			printf("\n");
    		}
    		else
    		{ 
    			j++;
    			if (j == 8)
    				printf("Not exsits \n");
    		}
    	}
    }

**运行结果：**  
![image-20210911161313748][]

--------------------

**题目2．编写一个程序，将数组a\[4\]\[4\]中的元素行列互换后存放在本数组中。**

**流程图：**

![image-20210911160920147][]

**实现代码：**

#include<stdio.h>
    void main()
    { 
    	int a[4][4] = { { 1,2,4,5},{  4,5,8,7},{ 9,6,4,3},{  7,8,9,0}};      
    	int i,j,b[4][4];
    	printf("原数组：\n");  
    	for(i = 0; i < 4; i++)
    	{ 
    		for(j = 0; j < 4; j++)
    		{ 
    			printf("%4d ",a[i][j]);
    		}
    		 printf("\n");
    	}
    	for(i = 0; i < 4; i++)
    	{ 
    		for(j = 0; j < 4; j++)
    		{ 
    			b[j][i]=a[i][j];   //行列互换
    		}
    	}
    	for(i = 0; i < 4; i++)
    	{ 
    		for(j = 0; j < 4; j++)
    		{ 
    		  a[i][j] = b[i][j];
    		}
    	}
    	printf("\n");
    	printf("行列互换后的数组：\n");   
    	for(i = 0; i < 4; i++)
    	{ 
    		for(j = 0; j < 4; j++)
    		{ 
    			printf("%4d ",a[i][j]);
    		}
    		 printf("\n");
    	}
    }

**运行结果：**  
![image-20210911161320239][]

--------------------

**题目3． 编写一个程序，输出杨辉三角前10行。**

**流程图：**

![image-20210911161000247][]

**实现代码：**

#include <stdio.h>
    #define N 10
    void main()
    { 
        int i, j, k, n = 10, a[N][N];  
        printf("10行杨辉三角如下：\n");
        for(i = 1; i < n; i++)
            a[i][1] = a[i][i] = 1;  
        for(i = 3; i <= n; i++)
            for(j = 2; j <= i-1; j++)
                a[i][j] = a[i-1][j-1] + a[i-1][j];    
    for(i = 1; i <= n; i++){ 
            for(k = 1; k <= n-i; k++)
                printf(" ");  
            for(j = 1; j <= i; j++) 
                printf("%6d",a[i][j]);   
            printf("\n");  
        }
        printf("\n");
    }

**运行结果：**  
![image-20210911161337815][]

--------------------

**题目4. 编写一个程序，判断一个字符串是否回文。回文就是顺读和逆读都相同，如字符串’abcba’就是回文。**

**流程图：**

![image-20210911161128692][]

**实现代码：**

#include <stdio.h>
    #include <string.h>
    
    void main(){ 
        char s[100];  // 存放输入的字符串
        int i, j, n;
        printf("输入字符串：");
    scanf("%s",s); 
        n=strlen(s);
        for(i=0,j=n-1;i<j;i++,j--)
            if(s[i]!=s[j]) break;
            if(i>=j)
                printf("是回文串\n");
            else
                printf("不是回文串\n");
    }

**运行结果：**  
![image-20210911161344211][]

--------------------

动动小手点个赞，关注走一波。有什么问题欢迎和我交流。或者关注我的微信公众号`码上言`获得更多的学习。  
![微信公众号：码上言][26e793d93499cb2c2afa75ea987e42a3.png]

[image-20210911160840126]: /images/20220828/8c70cccbd368463ebbb8ffe87430ce86.png
[image-20210911161313748]: /images/20220828/dfd60bd51e1b488cafccd802bd63bbad.png
[image-20210911160920147]: /images/20220828/da44e76fb40445789bba1b8e2be2074e.png
[image-20210911161320239]: /images/20220828/5dd10bc8ccc34fb28e73a2dd1983fab6.png
[image-20210911161000247]: /images/20220828/f2aa494fce864bd5b1d596794e786e4c.png
[image-20210911161337815]: /images/20220828/bfd04e72d2524c1eaf96ba0c7c302b4c.png
[image-20210911161128692]: /images/20220828/4175b2882cdb4801b2d55d27782ca8e2.png
[image-20210911161344211]: /images/20220828/dc426fc10db54e4690d4c804ed5b11f4.png
[26e793d93499cb2c2afa75ea987e42a3.png]: /images/20220828/ac07ca1e16ee443983504648a11afd2a.png