
Concept explainers
Given the declaration of a C-string variable, where SIZE is a defined constant:
char ourString[SIZE];
The C-string variable ourString has been assigned in code not shown here. For correct C-string variables, the following loop reassigns all positions of ourString the value ‘X’, leaving the length the same as before. Assume this code fragment is embedded in an otherwise complete and correct
int Index = 0;
while (ourString[index] != ‘\0’)
{
outString[index] = ‘X’;
index++;
}
a. Explain how this code can destroy the contents of memory beyond the end of the array.
b. Modify this loop to protect against inadvertently changing memory beyond the end of the array

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