main()
{
int i = 1;
int num[] = {1,2,3,4};
num[i] = i++;
printf("%d", num[i]);
}
what will be the output?
}
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Answer Posted / james holdcroft
The output will be 1 or 3, depending on the compiler.
Quoting from "The C Programming Language, Second Edition"
by Kernighan and Ritchie:
C, like most languages, does not specify the order in which
operands of an operator are evaluated. (The exceptions are
&&, ||, ?:, and ','.)
...
One unhappy situation is typified by the statement
a[i] = i++;
The question is whether the subscript is the old value of i
or the new. Compilers can interpret this in different
ways, and generate different answers depending on their
interpretation.
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