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  1. #include <iostream>
  2. using namespace std;
  3. int main;() {
  4. 		int a,s=0;
  5. 	for(a=1,a<20,a*=a)
  6. 	s=s+a;
  7. 	cout<<s<<endl;
  8. 	return 0;
  9. 	}
  10.  
Compilation error #stdin compilation error #stdout 0s 0KB
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stdin
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Standard input is empty
compilation info 
prog.cpp:3:5: error: cannot declare ‘::main’ to be a global variable
 int main;() {
     ^~~~
prog.cpp:3:11: error: expected unqualified-id before ‘)’ token
 int main;() {
           ^
stdout
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Standard output is empty
https://ideone.com/De9OfV
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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