高级语言程序设计课程第六次个人作业

这个作业属于哪个课程：https://edu.cnblogs.com/campus/fzu/2024C/
这个作业要求在哪里： https://edu.cnblogs.com/campus/fzu/2024C/homework/13303
学号:102300108
姓名:陈茜蕾

1

问题：k++导致出错
解决：改成k+=1

2

问题：忘记在字符串末尾加'\0'
解决：后面补上了

3

问题：一开始直接拿sizeof(arr)作为长度
解决：后面改成sizeof(arr) / sizeof(arr[0])

4

5

6

7

8

9

#include <stdio.h>
#include<string.h>
#pragma warning (disable:4996)
int prime[1000] = { 0 };
bool isPrime(int n){
	for (int i = 2; i * i <= n; i++) {
		if (n % i == 0) {
			return false;
		}
	}
	return true;
}
int split(int n, int* a, int* b) {
	for (int i = 0; prime[i] < n; i++) {
		for (int j = 0; prime[j] < n; j++) {
			if (prime[i] + prime[j] == n) {
				*a = prime[i];
				*b = prime[j];
				return 1;
			}
		}
	}
	return 0;
}
int main() {
	int n = 0;
	scanf("%d", &n);
	for (int i = 2,cnt=0; i <= n; i++) {
		if (isPrime(i)) {
			prime[cnt] = i;
			cnt++;
		}
	}

	int a = 0;
	int b = 0;
	if (split(n, &a, &b)) {
		printf("%d=%d+%d", n, a, b);
	}
	else {
		printf("不能被分解");
	}
}

10

11

#include <stdio.h>
#include<string.h>
#pragma warning (disable:4996)
bool judgeCube(int arr[][100],int n) {
	int temp = 0;
	//temp初始值设定为第一行的和
	for (int i = 0; i < n; i++) {
		temp += arr[0][i];
	}
	int sum = 0;
	//判断行的和是否相等
	for (int i = 1; i < n; i++) {
		for (int j = 0; j < n; j++) {
			sum += arr[i][j];
		}
		if (sum != temp) {
			return false;
		}
		sum = 0;//置0
	}
	for (int j = 0; j < n; j++) {
		for (int i = 0; i < n; i++) {
			sum += arr[i][j];
		}
		if (sum != temp) {
			return false;
		}
		sum = 0;
	}
	//对角线
	for (int i = 0; i < n; i++) {
		sum += arr[i][i];
	}
	if (sum != temp) {
		return false;
	}
	sum = 0;
	//另一条对角线
	for (int i = 0; i < n; i++) {
		sum += arr[i][n - i - 1];
	}
	if (sum != temp) {
		return false;
	}
	sum = 0;
	return true;
}
int main() {
	int n = 0;
	scanf("%d", &n);
	int arr[100][100];
	for (int i = 0; i < n; i++) {
		for (int j = 0; j < n; j++) {
			scanf("%d", &arr[i][j]);
		}
	}
	if (judgeCube(arr, n)) {
		printf("YES");
	}
	else {
		printf("NO");
	}
}