#define C_IO_HEADER <stdio.h>
#include C_IO_HEADERA. #include<stdlib.h>
B. #include"printf"
C. #include"C_IO_HEADER"
D. #include<stdio.h>
Answer: Option D
In C, what is a function primarily used for?
A. Decision making
B. Variable declaration
C. Code organization and reusability
D. Printing output
What is the purpose of a function prototype in C?
A. To declare a function's return type
B. To declare a function's name
C. To declare a function's parameters and return type
D. To declare a function's name and parameters
In C, how are function arguments passed by default?
A. By value
B. By reference
C. By pointer
D. By address
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