每周小题-Linux命令，编译链接

//来源：公众号【编程珠玑】
//main.c
#include <stdio.h>
#include <math.h>
int main(void)
{
    int a = 10;
    int b = 4;
    int c = pow(a,b);
    printf("10^4 = %d",c);
    return 0;
}

NAME
       pow, powf, powl - power functions

SYNOPSIS
       #include <math.h>

       double pow(double x, double y);
       float powf(float x, float y);
       long double powl(long double x, long double y);

       Link with -lm.

$ gcc -o main main.c -lm

$ gcc -o main main.c -lm

$ gcc -lm -o main main.c

$ ldd main
    linux-vdso.so.1 =>  (0x00007ffc97fdf000)
    libm.so.6 => /lib/x86_64-linux-gnu/libm.so.6 (0x00007fc1aadc1000)
    libc.so.6 => /lib/x86_64-linux-gnu/libc.so.6 (0x00007fc1aa9f7000)
    /lib64/ld-linux-x86-64.so.2 (0x00007fc1ab0ca000)