Which of the following is the complete function?
a. int funct(int) {printf("hello"); }
b. int funct ( x ) {printf("hello");
c. int funct(int x ) {return x = x +1; }
d. int funct();
Answer (1)
The correct function definition is option c because it includes a return type, a parameter with a type declaration, and a return statement. The answer is c .
Explanation
Understanding the Problem We are given four options for a function definition in C/C++ and asked to identify the complete and correct one. The function should return an integer.
Analyzing Option A Option a: int funct(int) {printf("hello");} is missing a return statement.
Analyzing Option B Option b: int funct ( x ) {printf("hello");} is missing a type declaration for the parameter x and a return statement.
Analyzing Option C Option c: int funct(int x ) {return x = x +1; } has a return statement and a type declaration for the parameter x .
Analyzing Option D Option d: int funct(); is a function declaration, not a definition. It's missing the function body.
Conclusion Therefore, option c is the complete function.
Examples
In programming, functions are like mini-programs that perform specific tasks. Just like in math, where you can define a function like f ( x ) = x + 1 , in programming, you define functions to reuse code and make your programs more organized. For example, you might create a function to calculate the area of a circle, which you can then use in different parts of your program whenever you need to calculate the area of a circle. This makes your code easier to read and maintain.
