c programming interview question with solution

(1)void main()

{

int i='-'-'-';

int a;

clrscr();

a=sizeof(i++,++i,1.1);

printf(" a= %d i= %d",a,i);

getch();

}

output : a=0 a=8

(2)

void main()

{

unsigned int i=-1;

int j=-1;

float b,c;

clrscr();

b=i+5.5;

c=j+5.5;

printf("%.0f %.0e\n",b,c);

printf("%u\n",i*-1);

printf("%u\n",-i*-1);

getch();

}

output: 65540 4e+00

1

65535

(3)

void main()

{

unsigned char a=-13;

int b;

clrscr();

b=~(a^a);

printf("%x %X\n",b);

getch();

}

output:ffff FFFF

(4)

void main()

{

struct xxx {

int z:3;

int x:3;

}x;

x.z=4;

x.x=-4;

clrscr();

printf("%d %d",x.z,x.x);

getch();

}

output: -4 -4

(5)

void main()

{

clrscr();

printf("%o",sizeof(""));

getch();

}

output: 1