Plz See
#include<stdio.h>
#define TOTAL_ELEMENTS (sizeof(array) / sizeof(array[0]))
int array[] = {23,34,12,17,204,99,16};
int main()
{
if(-1<= (TOTAL_ELEMENTS-2) )
printf("%s","gotcha\n");
else
printf("%s","oops\n");
return 0;
}why is it printing oops
Jump to Post>why is it printing oops
Probably because you're mixing signed and unsigned types using negative values. That way lies madness.
Jump to Post>compiler is taking -1 as signed and TOTAL_ELEMENTS as unsigned
No, I mean to say that -1 is being promoted to an unsigned type, which wraps the value around to the largest value representable by that unsigned type. Thus, -1 when promoted to an unsigned type is larger than the …
>why is it printing oops
Probably because you're mixing signed and unsigned types using negative values. That way lies madness.
>why is it printing oops
Probably because you're mixing signed and unsigned types using negative values. That way lies madness.
You mean to say
compiler is taking -1 as signed and TOTAL_ELEMENTS as unsigned
Or since sizeof operator evaluates to unsigned numbers
Is that the reason
>compiler is taking -1 as signed and TOTAL_ELEMENTS as unsigned
No, I mean to say that -1 is being promoted to an unsigned type, which wraps the value around to the largest value representable by that unsigned type. Thus, -1 when promoted to an unsigned type is larger than the number of elements in the array.
Long story short, don't mix signed and unsigned types unless you know what's going to happen.
Ok i got it ....thanx
We're a friendly, industry-focused community of developers, IT pros, digital marketers, and technology enthusiasts meeting, networking, learning, and sharing knowledge.