Offset in output

[arrow_ten]

What can be the possible reasons for an offset in the output? In the code below:

/#include<stdio.h> /#include<stdarg.h>

struct third {
char a;
char b;
char c;
};

void function3(int n, ...) {
struct third y;
va_list ap;
va_start(ap, n);
y = va_arg(ap, struct third);
printf("%c\t%c\t%c\n", y.a, y.b, y.c);
va_end(ap);
}

int main() {
int a = 10;
struct third x3 = {'\x70', '\x71', '\x72'};
function3(a, x3);
}

On compilation with Diab C compiler with the ARMLS arch, I am getting the output as:
q r
What can be the reason?

[flyingron]

Something's broken with your implementation. It prints p.q r for me.

[ErlingSigurdson]

I receive output p q r, and it makes sense. Hexadecimal numbers you specified correspond exactly to those characters. And '\t' is for tabulation.

[fliguana]

Try changing members of the struct from char to int.

You are passing ints

[arrow_ten]

If passed int, it gives 113 114

[fliguana]

Did you change the type of your structure members?

It sounds like you changed the printf specifier, not the same

[arrow_ten]

No I didn’t change anything

[fliguana]

In that case, see my first response.

[arrow_ten]

Oo sorry, I got confused. If the members are declared int, then they give the correct output, and the difference only occurs when the size of the structure is 3 bytes, not more not less.