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C Language > Learn C Language > Why can arrays not be given to functions?
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Why can arrays not be given to functions?

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In passing an array as a parameter to a function it is passed as a reference parameter. What is actually passed is the address of its first element. Since arrays are passed by reference this means that if the function changes the value of an element in an array that is a parameter of the function then...
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In passing an array as a parameter to a function it is passed as a reference parameter. What is actually passed is the address of its first element. Since arrays are passed by reference this means that if the function changes the value of an element in an array that is a parameter of the function then the corresponding actual array of the call will have that element changed. read less
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Expert Technical Trainer with 15 years of work experience

An array's reference becomes a pointer to the first element of the array. It uses the concept of "passing by call by value". By using "call by value" method, one can pass only one value. In C, except for a few special cases, an array reference always "decays" to a pointer to the first element of the...
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An array's reference becomes a pointer to the first element of the array. It uses the concept of "passing by call by value". By using "call by value" method, one can pass only one value. In C, except for a few special cases, an array reference always "decays" to a pointer to the first element of the array. Therefore, it isn't possible to pass an array "by value". An array in a function call will be passed to the function as a pointer, which is analogous to passing the array by reference read less
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Oracle, Hindi, C++, C, MS Office, VBScript,JavaScript,Spoken English etc with 32 years of experience

In passing an array as a parameter to a function it is passed as a reference parameter. What is actually passed is the address of its first element. Since arrays are passed by reference this means that if the function changes the value of an element in an array that is a parameter of the function then...
read more
In passing an array as a parameter to a function it is passed as a reference parameter. What is actually passed is the address of its first element. Since arrays are passed by reference this means that if the function changes the value of an element in an array that is a parameter of the function then the corresponding actual array of the call will have that element changed. Though an array is passed as a reference parameter an & is not used to denote a reference parameter. However it must be indicated to the compiler that this parameter is an array by appending [] to the formal parameter name. read less
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Because, it also need one more argument i.e., a size of an array. Therefore arrays are usually passed by pointers
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