錯誤：在算術中使用的函數指針

Question

我試圖編寫Prim的算法。然而，當我編譯我得到的線路上的錯誤：57,59,60,62,63,65

顯然這是與我的陣列有關......我只是不知道究竟是什麼。我感覺到它與我試圖找出並失敗的指針有關。

int map [] [7]是我用來跟蹤我的初始圖形的全局數組。

編輯 - 這裏要求的是所有的代碼

#include <iostream> 

using namespace std; 

void performPrims(int); 
void print(int *); 

// Global Variables 
int nodes = 7; 
int cur = 0; 
int cost = 0; 

int map[][7] = 
    {{0,3,6,0,0,0,0}, 
    {3,0,7,0,0,12,0}, 
    {6,7,0,10,13,8,0}, 
    {0,0,10,0,0,0,5}, 
    {0,0,13,0,0,9,4}, 
    {0,12,8,0,9,0,11}, 
    {0,0,0,5,4,11,0}}; 

int main() 
{ 
// Initializations 

srand(time(NULL)); 
int S = rand() % 7; // Create an arbitrary starting point 

// Perform Prim's Algorithm starting with S 

performPrims(S); 

return 0; 
} 

void performPrims(int S) 
{ 
int low = 100; 

// open[] is used to keep track of what vertices are available 
int open [] = {1,2,3,4,5,6,7}; 

// closed [] is used to keep track of what vertices have been reached and in what order 
int closed [] = {0,0,0,0,0,0,0}; 

open [S] = 0;  // Make our starting node unavailable 
closed [cur] = S+1; // Record our starting node in the path 
cur++; 

while (cur < 7) 
{ 
    int i=0; 
    while (i<nodes) 
    { 
     int k=0; 
     while (k<nodes) 
     { 
      if (*map[*close[i]-1][k] > 0 && *map[*close[i]-1][k] < low) 
      { 
       low = map[close[i]-1][k]; 
       close [cur] = k+1; 
      } 
      map[close[cur-1]-1][close[cur]-1] = 0; 
      map[close[cur]-1][close[cur-1]-1] = 0; 
      cost += low; low = 100; 
      open[close[cur]-1] = 0; 
      k++; 
     } 
     i++; 
    } 
    cur++; 
} 
print(closed); 
} 

void print(int *closed) 
{ 
cout<<"The path taken was "; 
for (int i=0; i<nodes; i++) 
    cout<<closed[i]<<" "<<endl; 
cout<<"\nThe cost is "<<cost<<endl; 
} 

錯誤

有一些不同的：

錯誤：指針的函數運算使用（許多行） 錯誤：無效類型'int [7] [7] [int（*）（int）]'數組下標（許多行） 錯誤：a指定只讀位置（LINE 60） 錯誤：無法在作業（LINE 60）中將'int'轉換爲'int（）（int）'

Answer 1

拼寫錯誤closed。您改爲輸入close。

將close的所有實例替換爲closed。

此外，將#include <cstdlib>添加到文件的頂部。