我的 GCC 编译器给了我警告: power.c:在函数“main”中: power.c:9:36: 警告:函数‘power’的隐式声明[-Wimplicit-function-declaration] 9 | printf("%d \t %d \t %d \n", i+1, power(2,i), power(-6,i)); |
而我已经明确声明了幂函数是隐式的,我在下面的代码中给出了
#include <stdio.h>
int main(){
int i;
printf("%s \t %s \t %s \n", "Powers", "of 2", "of -6");
for (i = 0; i < 10; ++i)
printf("%d \t %d \t %d \n", i+1, power(2,i), power(-6,i));
return 0;
}
int power(int base, int n){
int i, p;
p = 1;
for (i=0; i <= n; ++i)
p = p * base;
return p;
}
答案 0 :(得分:3)
您需要在调用之前转发声明您的 power
函数:
int power(int base, int n);
int main(){
int i;
printf("%s \t %s \t %s \n", "Powers", "of 2", "of -6");
for (i = 0; i < 10; ++i)
printf("%d \t %d \t %d \n", i+1, power(2,i), power(-6,i));
return 0;
}
或者,您可以将 power
的定义移到 main
之前。