Question

main() { int a=10; printf("%d", a++); printf("%d",a); } What is the output?​

Answer 1

Output for the above program -

10

11

Answer 2

Output of the given piece of code is:

10

11

• In c language, main() is the function, place from where the execution of the code begins.
• In the first statement inside main(),

        int a = 10;

        a variable with the name 'a' is declared with the data type of <int> and is simultaneously initialized to the value 10.

• printf() is a library function in c language, which is used to to display formatted output to the console.

• In the second statement inside main(),

       printf("%d", a++);

       ++ is an increment operator and it is behaving as postfix operator in  this case.

• Hence in the second statement, first the value of a i.e. 10 is printed to the console and then it incremented by 1, after the execution of this statement.
• In the statement

        printf("%d",a);

        the value of the variable 'a', which is 11 now, is printed to the console.

• Hence, output of the given piece of code is:

       10

       11

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