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Basic Structure of a C++ Program Video Lecture | Crash Course for EmSAT Achieve
FAQs on Basic Structure of a C++ Program Video Lecture - Crash Course for EmSAT Achieve
| 1. What is the basic structure of a C program? |  |
Ans. The basic structure of a C program consists of a collection of functions, where each function is a block of code that performs a specific task. The program starts executing from the main() function, and other functions can be called from it. The code within the functions is enclosed within curly braces ({}) and statements are terminated with a semicolon (;).
| 2. What is the purpose of the main() function in a C program? | |
Ans. The main() function is the entry point of a C program. It is where the program starts its execution. It can be considered as the heart of the program, as it contains the code that controls the flow of execution and calls other functions as needed. The main() function must be present in every C program.
| 3. How are functions defined and called in a C program? | |
Ans. Functions in C are defined by specifying the return type, function name, and parameters (if any). The function definition is followed by the body of the function enclosed within curly braces. To call a function, you simply use its name followed by parentheses, optionally passing any required arguments.
| 4. What is the role of the semicolon (;) in a C program? | |
Ans. In C, the semicolon (;) is used to terminate a statement. It acts as a delimiter to separate individual statements within a program. Forgetting to include a semicolon at the end of a statement can result in a compilation error.
| 5. Can you provide an example of a basic C program structure? | |
Ans. Certainly! Here's an example of a basic C program structure:
```
#include <stdio.h>
// Function declaration
void greet();
// Main function
int main() {
// Function call
greet();
return 0;
}
// Function definition
void greet() {
printf("Hello, world!");
}
```
In this example, the program includes the necessary header file, declares a function called `greet()`, defines the `main()` function, and calls the `greet()` function from within `main()`. The `greet()` function simply prints "Hello, world!" to the console.
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Oct 07, 2025
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