Convert C/C++ program to Preprocessor code
We use g++ compiler to turn provided Cpp code into preprocessor code. To see the preprocessor code generated by the CPP compiler, we can use the “-E” option on the command line:
Preprocessor include all the # directives in the code. and also expands MACRO function.
Syntax: g++ -E filename.cpp
// MACRO named MAX initialism to 10#define MAX 10 int main(){ int a = MAX, b = MAX; // Add two values. int c = a + b; return 0;} |
Running the command:
g++ -E geeks.cc
Output :
int main()
{
int a = 10, b = 10;
// Add two values.
int c = a + b;
return 0;
}
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