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                [TOC] ~~~ int main() { // int a = 10; // //定義一個變量在堆中,單位是Byte // char * p = (char *)malloc(sizeof(char)); // *p = 'a'; // printf("%c\n", *p); int arr[10]; int * p = (int *)malloc(sizeof(int) * 10); for (int i = 0; i < 10; ++i) { p[i] = i; } for (int i = 0; i < 10; ++i) { printf("%d\n", p[i]); } //釋放,根據首地址自動釋放,如果創建完的堆空間在使用結束后不釋放,會占用系統資源 free(p); getchar(); return EXIT_SUCCESS; } ~~~ 開辟0個空間就是野指針
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