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What will be the output of the following C code?

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What will be the output of the following C code?

#include <stdio.h>

int main(void)
{
    int x = 5;
    int *p = &x;
    int *k = p++;
    int r = p - k;
    printf("%d", r);
    return 0;
}
Choose one option.
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Answer: A. 1

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