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C and C++ allows passing of structure and objects by value to function, although prevents passing arrays by values.
Why?
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Arrays are not passed by value because arrays are essentially continuous blocks of memmory. If you had an array you wanted to pass by value, you could declare it within a structure and then access it through the structure.
You cannot pass an array by value in C.
An array can be passed to functions in C using pointers by passing reference to the base address of the array, and similarly, a multidimensional array can also be passed to functions in C.
In case of an array (variable), while passed as a function argument, it decays to the pointer to the first element of the array. The pointer is then passed-by-value, as usual.
In C/C++, internally, an array is passed as a pointer to some location, and basically, it is passed by value. The thing is, that copied value represents a memory address to the same location.
In C++, a vector<T> is copied and passed to another function, by the way.
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