代码(不对)
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| #include <stdio.h> #include <stdlib.h>
typedef struct Twotrees { int data; struct Twotrees *left; struct Twotrees *right; } Trees;
void preoder(Trees* node){ if(node != NULL){ printf(node -> data); preoder(node -> left); preoder(node -> right);
} }
void inoder(Trees* node){ if(node != NULL){ preoder(node -> left); printf(node -> data); preoder(node -> right);
} }
void postoder(Trees* node){ if(node != NULL){ preoder(node -> left); preoder(node -> right); printf(node -> data);
} }
void Addele(Trees* node){ printf("请输入该节点是否有左孩子,0代表无,1代表有。"); int rightKey; scanf("%d",&rightKey); printf("请输入该节点是否有右孩子,0代表无,1代表有。"); int leftKey; scanf("%d",&leftKey); printf("请输入该节点的数值"); scanf ("%d",&node -> data); if(rightKey != 0){ Addele(node -> left); } if(leftKey != 0){ Addele(node -> right); }
}
int main() {
}
|
代码(至少能正常输入了)
需要注意这两行代码
scanf(“%d”,&(node->data));
printf(“%d”,node->data);
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| #include <stdio.h> #include <stdlib.h>
typedef struct Twotrees { int data; struct Twotrees *left; struct Twotrees *right; } Trees;
void preoder(Trees *node) { if (node != NULL) { printf("%d", node->data); preoder(node->left); preoder(node->right); } }
void inoder(Trees *node) { if (node != NULL) { preoder(node->left); printf("%d", node->data); preoder(node->right); } }
void postoder(Trees *node) { if (node != NULL) { preoder(node->left); preoder(node->right); printf("%d", node->data); } }
void Addele(Trees *node) { printf("请输入该节点是否有左孩子,0代表无,1代表有。"); int rightKey; scanf("%d", &rightKey); printf("请输入该节点是否有右孩子,0代表无,1代表有。"); int leftKey; scanf("%d", &leftKey); printf("请输入该节点的数值"); node = (Trees*)malloc(sizeof(Trees)); scanf("%d",&(node->data)); if (rightKey != 0) { Addele(node->left); } if (leftKey != 0) { Addele(node->right); } }
int main() { Trees* root = NULL; Addele(root); printf("%d",root->data); system("pause"); }
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