A variable is the name of a memory location. We always have access to variables. BT301 Handouts PDF In the name (you actually have access to a memory location) the name is variable Variable location address If you want the called function to change the value of the variable in the called function.
BT301 Handouts PDF
You must pass the address of this variable to the called function. So through We move the address of the variable to the called function to the function: BT301 Handouts PDF The number to be changed is transferred to this memory space, squared, and Put the result back in that space.
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When the calling function receives the Control returns after calling the called function, get the value changed to the Same stance. BT301 Handouts PDF In summary, when using the call by reference method, we cannot pass the value.
You must pass the address of this variable to the called function. So through We move the address of the variable to the called function to the function.
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