小编Kid*_*234的帖子

我已经定义了struct Node和createNode函数。

typedef struct {
    int r, c;
    int val;
    struct Node* down, *right;
} Node;

typedef Node* NodePointer;    

NodePointer createNode(int r,int c,int val) {
        NodePointer p = (NodePointer)malloc(sizeof(NodePointer));
        if (p != NULL) {
            p->r = r;
            p->c = c;
            p->val = val;
            p->down = p->right = NULL;
        }
        return p;
}

然后当我尝试在主要功能中使用它时

int i = 0;
NodePointer* rows = (NodePointer*)malloc(50*sizeof(NodePointer));
for (i = 0; i < 20; i++) {        
    rows[i] = createNode(i,i+10,i*i);
}

它引发了运行时错误，但是当我像这样更改for循环时（更改在for循环中-仅执行一次）：

for (i = 0; i …