#include <stdio.h>/* 計(jì)算一個(gè)數(shù)的立方 */int cube(const int x) { return x * x * x;}/* 計(jì)算一個(gè)數(shù)的階乘 */int factorial(const int x) { int rst = 1; for (; x > 0; --x) { ? ? ? //[Error] decrement of read-only parameter 'x' rst *= x; } return rst;}int main(void) { const int v = 7;printf("cube(7) = %d\n", cube(v)); printf("factorial(7) = %d\n", factorial(v)); return 0;}