Question: I have included the answer (provided by my professor) below. However, i don't really understand. ……

I have included the answer (provided by my professor) below. However, i don’t really understand. Please explain to me! Thank you.

Given the C++ function prototype and variable declarations:

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int func(int arg0, int *arg1, int arg2);

int *ptr, n, arr[10];

which of the following statements will cause syntax errors or warnings about type mismatch/missing cast? For each case, write either BAD (error or warning), or OK (no error or warning), and circle also *all* the argument/variables that have type mismatches. No points will be awarded for a statement if there is a syntax error and you circle the wrong argument/variable.

The answer is:

ptr[n] = func(arr[0], &arr[n], n); OK

*ptr = func(arr[*ptr], &n, ptr); BAD (3rd arg: ptr is not an integer)

Expert Answer

answers

1.ptr[n] = func(arr[0], &arr[n], n); OK ——it will work fine because all parameter we pass in func() is correct.

2. *ptr = func(arr[*ptr], &n, ptr); BAD (3rd arg: ptr is not an integer) it will give error because the function will accept only integer as a third parameter. but we are passing pointer type parameter. pointer hold only address not any value.

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