Error log:

Compiling...
c:\docume~1\coding\desktop\mycodi~1\sample.cpp
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(6) : error C2065: 'pythag' : undeclared identifier
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(6) : error C2064: term does not evaluate to a function
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(7) : error C2143: syntax error : missing ';' before '{'
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(25) : error C2061: syntax error : identifier 'varA'
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(28) : error C2061: syntax error : identifier 'varB'
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(30) : warning C4508: 'main' : function should return a value; 'void' return type assumed
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(31) : error C2143: syntax error : missing ';' before 'if'
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(33) : error C2143: syntax error : missing ';' before '}'
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(35) : error C2143: syntax error : missing ';' before '}'
c:\docume~1\coding\desktop\mycodi~1\sample.cpp(43) : error C2143: syntax error : missing ';' before '}'
 CL returned error code 2.
SAMPLE.EXE - 9 error(s), 1 warning(s)


===========


#include <iostream.h>


int main()
{         
	pythag()
	{	
	int varA;
	int varB;
	int varC;
	int a2;
	int b2;
	int c2;
	int variable;
	cout << "Enter the variables for A, B, and C. If you don't have a unit for a variable, enter -0.";
	cout << "A=?";
	cin >> varA;     
	
	cout << "B=?";
	cin >> varB;
	
	cout << "C=?";
	cin >> varC; 
	
	if varA==-0{
		"a" >> variable;
		}
	if varB==-0{
		"b" >> variable;   
		}
	if varC==-0{
		"c" >> variable;
		} 
		return void; 
	}
	
		
	
	
	
	
	return 0;
}