C语言实现：输入正整数输出其所有质因数（附代码）

```c #include <stdio.h> int main() { int num; scanf("%d", &num); printf("%d=", num); int factor = 2; int first = 1; while (num > 1) { if (num % factor == 0) { if (!first) { printf("*"); } printf("%d", factor); first = 0; num /= factor; } else { factor++; } } printf("\n"); return 0; } ``` ######[AI问答 | 141点数解答 | 2025-11-11 16:52:05]