示例

void main( int argc, char* argv[]) {
switch ( argc ) {
case 0:
cout << "No parameters";
break ;
default :
cout << "Parameters: ";
for ( int i = 0, n = argc; i < n; i ++){
cout << argv[i];
}
break ;
}
}

解决方案
改用 if/else。

void main( int argc, char* argv[]) {
if ( argc == 0 ) {
cout << "No Paramaters";
} else {
cout << "Parameters: ";
for ( int i = 0, n = argc; i < n; i ++){
cout << argv[i];
}
}
}