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The program is designed to zero out an array. So why doesn't it work? Is memset broken?
1 /************************************************
2 * zero_array -- Demonstrate how to use memset *
3 * to zero an array. *
4 ************************************************/
5 #include <iostream>
6 #include <cstring>
7
8 int main()
9 {
10 // An array to zero
11 int array[5] = {1, 3, 5, 7, 9};
12
13 // Index into the array
14 int i;
15
16 // Zero the array
17 memset(array, sizeof(array), '\0');
18
19 // Print the array
20 for (i = 0; i < 5; ++i)
21 {
22 std::cout << "array[" << i << "]= " <<
23 array[i] << std::endl;
24 }
25 return (0);
26 }
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From a FORTRAN manual for Xerox computers:
The primary purpose of the DATA statement is to give names to constants; instead
of referring to π as 3.141592653589793 at every appearance, the variable PI can
be given that value with a DATA statement and used instead of the longer form of
the constant. This also simplifies modifying the program, should the value of π
change.
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