I am a beginner of C++ programming. When I am learning the array, I copied a program from a book and cannot be executed. I don't know what is wrong? Please help me!!!


#include<iostream.h>
void main()
{
int max_element();
int n, a[10];
int max;
for(n=0; n<10; n ++)
cin>>a[n];
max=max_element(a, 10);
cout<<max;
}
int array[], size;
int max_element(array,size)
{
int temp, j;
temp = array[0];
for(j=0; j<size; j++)
if(temp<array[j]) temp=array[j];
return temp;
}



The errors are
'max_element' : function does not take 2 parameters
<Unknown>' : function-style initializer appears to be a function definition

int max_element();

do u mean to find the max number of an array whoes size is 10?
if so..
I changed ur program a bit..
u can see the difference..


#include<iostream.h>
int max_element(int[], int);
void main(){
int n, a[10];
int max;
for(n=0; n<10; n ++)
cin>>a[n];
max=max_element(a, 10);
cout<<max;
cout<<endl;
}
int max_element(int array[] , int size){
int temp, j;
temp = array[0];
for(j=0; j<size; j++)
if(temp<array[j])
temp=array[j];
return temp;
}

main() is an exception. All the other functions need to be declared before use. Just put your function prototype at the beginning of the program.

BTW: It's better to use <iostream> than <iostream.h>

not very sure, please teach me more :)

Functions need to be declared before use, this is the basic rule for C/C++.

always java oriented :$

不一定非要declare。

函数定义前面也给出了prototype的啊！

一般的做法还是先declare，后implement。特别是C++。