Which is the smallest program to compile and run without errors?

What is optional in a function declaration?

C treats all devices, such as the display and the keyboard, as files. Which files opens automatically when a program executes?

In which segment does dynamic memory allocation takes place?

Which function do you use to deallocate memory?

In C language what are the basic building blocks that are constructed together to write a program?

What is the value of 1 & 2?

Following code print? void *p = malloc(0); printf ('%d\n', p);

Output of the following code? char * str1 = 'abcd'; char * str2 = 'xyz'; if( str1 < str2 ) printf( '1' ); else printf( '2' );

foo[4] is equivalent of :

With: sizeof(char *) == 4 sizeof(char) == 1 What will sizeof(plop) for char plop[2][3] be?