A macro must always be defined in capital letters.

More Questions from C Preprocessor

• Macros with arguments are allowed
• Macros have a local scope.
• There exists a way to prevent the same file from getting #included twice in the same program.
• Will the following program print the message infinite number of times? #include #define INFINITELOOP while(1) int main() { INFINITELOOP printf("CuriousTab"); return 0; }
• Will the program compile successfully? #include int main() { #ifdef NOTE int a; a=10; #else int a; a=20; #endif printf("%d\n", a); return 0; }
• Would the following typedef work? typedef #include l;
• Will the program compile successfully? #include #define X (4+Y) #define Y (X+3) int main() { printf("%d\n", 4*X+2); return 0; }
• It is necessary that a header files should have a .h extension?
• Will the program compile successfully? #include int main() { printf("India" "CURIOUSTAB\n"); return 0; }
• Will it result in to an error if a header file is included twice?

Discussion & Comments