Test cases are failing

#include
using namespace std;

int main() {
char cOpType;
cin>>cOpType;
int n1,n2;

while (cOpType=='*' || cOpType=='+' || cOpType=='-' ||  cOpType=='/' || cOpType=='%' || cOpType=='X' || cOpType=='x'){
  
	cin>>n1>>n2;
	if(cOpType=='*')
	   cout<<n1*n2<<endl;
	else if(cOpType=='+')
	    cout<<n1+n2<<endl;   
	else if(cOpType=='-')
	    cout<<n1-n2<<endl; 	
	else if(cOpType=='/')
	    cout<<n1/n2<<endl; 
	else if(cOpType=='%')
	    cout<<n1%n2<<endl; 
	else if(cOpType=='X' or cOpType=='x')
	    return 0;		
	      cin>>cOpType;
    	
} ;

cout<<"Invalid operation. Try again."<<endl;
return 0;

}

hi @pushkarsingh5247_4b1a78f1d102c737,
refer https://ide.codingblocks.com/s/667799

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