Today I had trouble in a C++ question need help

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int *pi;
for(*pi=0; *pi<5; *pi++)

What is the logical mistake in this code? Or is there any false?

Posted 11-Nov-10 9:13am

egultekinoglu

Updated 11-Nov-10 9:44am

Sauro Viti

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OriginalGriff · Accepted Answer · 2010-11-11T09:32:00

Solution 1

Firstly, try assigning a value to pi:

int* pi = &integerVariable;

Then, try incrementing the content, rather than the pointer:
(*pi)++ instead of *pi++

Posted 11-Nov-10 9:32am

OriginalGriff

Sauro Viti · Accepted Answer · 2010-11-11T09:34:00

Solution 2

You have declared pi as a pointer to integer, but you have not initialized it, then it points to a random address; then in the for loop you are using the random address that pi holds. This could cause serious problems as memory corruptions, memory protection faults, etc.

Posted 11-Nov-10 9:34am

Sauro Viti