Why there is a compile-time error thrown for if(age!<=0 || age!>=110)?

I am a student and I was writing a very simple console app, but I get a compile-time error for the following line:

I tried the following, but I only got more errors:

if((age!<=0) || (age!>=110)){/*Some code*/}

if(age!<=0 || age!>=110){/*Some code*/}   

The build message is the following for the first code:

||=== Build: Debug in Drill (compiler: GNU GCC Compiler) ===|

Principles and Practice Using C++\Code and Notes\3\Drill\main.cpp||In function 'int main()':|

Principles and Practice Using C++\Code and Notes\3\Drill\main.cpp|41|error: expected ')' before '!' token|

||=== Build failed: 1 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|

The build message is the following for the second code:

||=== Build: Debug in Drill (compiler: GNU GCC Compiler) ===|

Principles and Practice Using C++\Code and Notes\3\Drill\main.cpp||In >function 'int main()':|

Principles and Practice Using C++\Code and Notes\3\Drill\main.cpp|41|error: >expected ')' before '!' token|

Principles and Practice Using C++\Code and Notes\3\Drill\main.cpp|52|error: >expected ')' at end of input|

Principles and Practice Using C++\Code and Notes\3\Drill\main.cpp|52|error: >expected statement at end of input|

Principles and Practice Using C++\Code and Notes\3\Drill\main.cpp|52|error: >expected '}' at end of input|

||=== Build failed: 4 error(s), 0 warning(s) (0 minute(s), 0 second(s)) ===|

Also, I tried putting ')' before '!', but it did not help.