Program 65 #P65 - C Program FOR FUNCTION (USING CALL BY REFERENCE)#C184
CALL BY REFERENCE:
In call by reference method, the address of the variable is passed to the function as parameter.
The value of the actual parameter can be modified by formal parameter.
Same memory is used for both actual and formal parameters since only address is used by both parameters.
EXAMPLE PROGRAM FOR C FUNCTION (USING CALL BY REFERENCE):
In this program, the address of the variables “m” and “n” are passed to the function “swap”.
These values are not copied to formal parameters “a” and “b” in swap function.
Because, they are just holding the address of those variables.
This address is used to access and change the values of the variables.
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