Corrupted Compiler

[Seyter]

I made this program to determine the biggest value among 5 numbers using thus format. However I have error during compile. Does it because my compiler is corrupted?

#include <iostream>
double bigest (double a, double b, double c, double d, double e);
int main()
{
	double a, b, c, d, e;
	cout << "Value a: ";
	    cin >> a;
	cout << "Value b: ";
	    cin >> b;
	cout << "Value c: ";
	    cin >> c;
	cout << "Value d: ";
	    cin >> d;
	cout << "Value e: ";
	   cin >> e;
	cout << a; 
	cout << b;
	cout << c;
	cout << d;
        cout << e;
	cout << "Biggest value: " << big(a, b, c, d, e);
	
	return 0;
}
double big (double a,double b,double c,double d,double e);
{
	double num[5];
	for (int i = 0, i < 0; i++);
	{
		cin >> no[i];
		cout << "num: " << no[i] << endl;
	}
	
	double big;
	big = a;
	if ( b > big)
	   big = b;
	if ( c > big)
	   big = c;
  	if ( d > big)
	   big = d;
	if ( e > big)
	   big = e;
	return big;
}
	 	
	  

[Seyter]

main.cpp: In function ‘int main()’:
main.cpp:17:2: error: ‘cout’ was not declared in this scope
cout << "Value a: ";
^
main.cpp:17:2: note: suggested alternative:
In file included from main.cpp:12:0:
/usr/include/c++/5/iostream:61:18: note: ‘std::cout’
extern ostream cout; /// Linked to standard output
^
main.cpp:18:6: error: ‘cin’ was not declared in this scope
cin >> a;
^
main.cpp:18:6: note: suggested alternative:
In file included from main.cpp:12:0:
/usr/include/c++/5/iostream:60:18: note: ‘std::cin’
extern istream cin; /// Linked to standard input
^
main.cpp:32:48: error: ‘big’ was not declared in this scope
cout << "Biggest value: " << big(a, b, c, d, e);
^
main.cpp: At global scope:
main.cpp:37:1: error: expected unqualified-id before ‘{’ token
{
^

[helios]

Why would you first suspect that the compiler is corrupted, rather than your code being incorrect?

On line 2 you forward-declare bigest(), but on line 21 you call big(), and on line 25 you declare big().

Another issue, but unrelated to your problem, is that on line 34 you're declaring a variable with the same name as the function that contains it.

[Peter87]

All the names in the standard library are declared in the std namespace so unless you use 'using namespace std;' or similar you need to write std:: in front of cout, cin, etc.

std::cout << "Value a: ";
std::cin >> a;

[Seyter]

Ok i did that.. and comes out one error.

main.cpp:37:1: error: expected unqualified-id before ‘{’ token
{
^

[helios]

There's a stray semicolon at the end of line 25.

[jonnin]

repost your code. It is telling you that you either have something outside a {}
eg
int main()
int x; //no can do
{

or some other syntax error that we can't see in your old code.

double big (double a,double b,double c,double d,double e);
{
this for example is an issue.... your header (has a ;) and your body (does not) are being confused.

int foo(); //header
int foo() //body or implementation
{
return 5;
}

but this
int foo(); //is wrong
{

}

[Seyter]

#include <iostream>
double big(double a, double b, double c, double d, double e);
int main()
{
double a, b, c, d, e;
std::cout << "Value a: ";
std::cin >> a;
std::cout << "Value b: ";
std::cin >> b;
std::cout << "Value c: ";
std::cin >> c;
std::cout << "Value d: ";
std::cin >> d;
std::cout << "Value e: ";
std::cin >> e;
std::cout << a;
std::cout << b;
std::cout << c;
std::cout << d;
std::cout << e;
std::cout << "Biggest value: " << big(a, b, c, d, e);

return 0;
}
double biggest (double a,double b,double c,double d,double e);
{
double num[5];
for (int i = 0, i < 0; i++);
{
std::cin >> num[i];
std::cout << "num: " << num[i] << endl;
}

double big;
big = a;
if ( b > big)
big = b;
if ( c > big)
big = c;
if ( d > big)
big = d;
if ( e > big)
big = e;
return big;
}

[saeidsj]

1. You still have the problem by calling your function it is big not biggest
2. also this line does not need ;
"double biggest (double a,double b,double c,double d,double e);"

3. also the for loop are alyaws like for(;;)
4. for loop does not need ;
5. endl in for loop should be std::endl.

[jonnin]

Ok I am going to give you the showed-effort award and fixed it for you. I commented the changes. But you MUST learn to read the compiler errors and fix these things yourself, and you MUST learn when to use ; and when not to, or you will have trouble forever. The changes are 1-5 above in action.

#include <iostream>
double big(double a, double b, double c, double d, double e);
int main()
{

   double a, b, c, d, e;
   std::cout << "Value a: ";
   std::cin >> a;
   std::cout << "Value b: ";
   std::cin >> b;
   std::cout << "Value c: ";
   std::cin >> c;
   std::cout << "Value d: ";
   std::cin >> d;
   std::cout << "Value e: ";
   std::cin >> e;
   std::cout << a; 
   std::cout << b;
   std::cout << c;
   std::cout << d;
   std::cout << e;
   std::cout << "Biggest value: " << big(a, b, c, d, e);
   
   return 0;
}


double big (double a,double b,double c,double d,double e) //removed ; renamed function to correct name
{
   double num[5];
   for (int i = 0; i < 0; i++) //fixed comma to ; in loop, removed ; on for loop making it do nothing
   {   
      std::cin >> num[i];
      std::cout << "num: " << num[i] << std::endl; //fixed endl
   }     
   double big;
   big = a;
   if ( b > big)
   big = b;
   if ( c > big)
   big = c;
   if ( d > big)
   big = d;
   if ( e > big)
   big = e;
   return big;
}