3 回答int sum=0,i=1 對(duì)嗎?

3 回答#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==0||i+j==2||i+j==4) {sum+=arr[i][j];} }

2 回答#include <stdio.h> int main() { int a[10] = {0}; for (int i = 0; i < 10 , i++) { a[i] = arc4random()%50; printf ("%d",a[i]); } for (int i = 0; i < 10-1 ;i++ ) { for(int j = 0;j< 10-1-i ;j++) {

1 回答#include <stdio.h> int main() { int i=0,sum=0; while(i<=100) { sum=sum + i++; printf("100以內(nèi)所有整數(shù)之和為：%d\n",sum); } return 0; }

1 回答int i,sum中的sum