#include "stdafx.h"
#include<stdio.h>
#define A 5
void b(const double c[], int d);
void l(double c[], int d, double aa);
int main(void)
{
    double a[A] = {20.0, 17.66, 8.2, 15.3, 22.22};
    printf("fggdfgdhd\n");
    b(a, A);
    l(a, A, 2.5);
    printf("hfhgf\n");
    b(a, A);
    getchar();
    return 0;
}
void b(const double c[], int d)
{
    int i;
    for(i = 0; i < c; i++)
        prinft("%8.3f", c[i]);
    putchar("\n");
}
void e(double c[], int d, double aa)
{
    int i;
    for(i = 0; i < c; i++)
        c[i] *= aa;
}

for(i = 0; i < c; i++)        c 为数组首地址

还有最好贴出错误提示内容啊
手机党没有编译器

--------------------Configuration: hffdsa - Win32 Debug--------------------
Compiling...
StdAfx.cpp
Compiling...
hffdsa.cpp
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(23) : error C2446: '<' : no conversion from 'const double []' to 'int'
        This conversion requires a reinterpret_cast, a C-style cast or function-style cast
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(23) : error C2040: '<' : 'int' differs in levels of indirection from 'const double []'
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(24) : error C2065: 'prinft' : undeclared identifier
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(25) : error C2664: '_flsbuf' : cannot convert parameter 1 from 'char [2]' to 'int'
        This conversion requires a reinterpret_cast, a C-style cast or function-style cast
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(30) : error C2446: '<' : no conversion from 'double []' to 'int'
        This conversion requires a reinterpret_cast, a C-style cast or function-style cast
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(30) : error C2040: '<' : 'int' differs in levels of indirection from 'double []'
执行 cl.exe 时出错.

hffdsa.exe - 1 error(s), 0 warning(s)

--------------------Configuration: hffdsa - Win32 Debug--------------------
Compiling...
hffdsa.cpp
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(23) : error C2446: '<' : no conversion from 'const double []' to 'int'
        This conversion requires a reinterpret_cast, a C-style cast or function-style cast
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(23) : error C2040: '<' : 'int' differs in levels of indirection from 'const double []'
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(25) : error C2664: '_flsbuf' : cannot convert parameter 1 from 'char [2]' to 'int'
        This conversion requires a reinterpret_cast, a C-style cast or function-style cast
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(30) : error C2446: '<' : no conversion from 'double []' to 'int'
        This conversion requires a reinterpret_cast, a C-style cast or function-style cast
D:\迅雷下载\MyProjects\hffdsa\hffdsa.cpp(30) : error C2040: '<' : 'int' differs in levels of indirection from 'double []'