4 回答include <stdio.h> void replaceMax(int arr[],int value) { int max = arr[0]; int index = 0; int i; for(i=1;i<5;i++) { if(arr[i]>max) { max=arr[i]; //將數組中較大的數賦值給max index = i; //記錄當前索引

2 回答int GetIndex(int arr[],int value) { int i; for(i=0;i<5;i++) { if(arr[i] == value) return i; else return -1; } return -1; } 為什么把return -1;放在for循環中會錯 ?

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int index = getIndex(arr , value);