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我這個(gè)有什么問題嗎？求大佬幫助?。?/h1>
#include <stdio.h>
int main()
{
? ? int arr[3][3] = {{1,2,3},{4,5,6},{7,8,9}};
? ? int i,j;
? ? int sum=0;
? ? for(i=0;i<3;i++)
? ? {
? ? ? ?for(j=0;j<3;j++)
? ? ? ?{
? ? ? ? ?if(i=j)
? ? ? ? ?{
? ? ? ? ? ? ?sum +=arr[i][j];
? ? ? ? ?}
? ? ? ? ?else if(j-i=1||i-j=1 )
? ? ? ? ?{
? ? ? ? ? ? ?sum +=arr[i][j];
? ? ? ? ?}
? ? ? ? ? ?
? ? ? ? ? ?
? ? ? ?}
? ? ? ?
? ? ? ?
? ? ? ?
? ? ? ?
? ? ? ?
? ? ? ?
? ? }
? ? printf("對(duì)角線元素之和是：%d\n",sum);
? ? return 0;? ??
}

1284Happy_Z

2022-03-26

源自：C語(yǔ)言入門 6-11

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2 回答

JYYANG
2022-08-11

else if(j-i=1||i-j=1 )這一句你的意思應(yīng)該是j-i等于1吧？

在C語(yǔ)言里“=”是“賦值”的意思，j-i=1是把1這個(gè)值賦給j-i作為結(jié)果

“==”才是“等于”的意思，改成：else if(j-i==1||i-j==1 )即可

0 回復(fù) 有任何疑惑可以回復(fù)我~

慕妹0327896
2022-04-01

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