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C Language > Learn C Language > What is a calling function in C?
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What is a calling function in C?

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Calling function is the one where the function call has been made and after executing the called function, control returns to the calling function.
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A function call is an expression that includes the name of the function being called or the value of a function pointer and, optionally, the arguments being passed to the function
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I have 10 years experience in teaching C, C++, Java, Python, tally, Ms-Excel, SQL.

Simply says function is called sub program. When we call the function then only it will execute. 1. No argument passing and no return 2. Argument passing but no return 3. Argument passing and return also 4. No argument passing but return the value.
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Simply says function is called  sub program.

When we call the function then only it will execute. 

1. No argument passing and no return 

2. Argument passing but no return 

3. Argument passing and return also 

4. No argument passing but return the value.

 

 

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IT Trainer with 7 Years of Experience.

ChatGPT In C programming, a "calling function" refers to a function that invokes (calls) another function to perform a specific task or calculation. Here’s a breakdown of how calling functions work in C: Basics of Calling Functions: Function Definition: A function in C is...
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In C programming, a "calling function" refers to a function that invokes (calls) another function to perform a specific task or calculation. Here’s a breakdown of how calling functions work in C:

Basics of Calling Functions:

  1. Function Definition:

    • A function in C is a block of code that performs a specific task. It has a name, a return type (which can be void if the function doesn't return a value), optional parameters (also called arguments), and a body containing statements that define what the function does.

  2. Function Prototype (Declaration):

    • Before calling a function in C, its prototype (declaration) must typically be provided. The prototype includes the function's name, return type, and parameters (if any).

  3. Function Call:

    • To execute a function, you simply write its name followed by parentheses () and any required arguments inside the parentheses. This is known as calling or invoking the function.
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When a program calls a function, the program control is transferred to the called function. A called function performs a defined task and when its return statement is executed or when its function-ending closing brace is reached, it returns the program control back to the main program.
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