Bit Fields
- What will be the output of the following C code?
#include <stdio.h>
struct N
{
unsigned int x : 1;
unsigned int y : 1;
};
int main()
{
struct N n;
n.x = 10;
n.y = 20;
printf("%d\n", n.y);
}
-
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NA
Correct Option: A
0
- What will be the output of the following C code?
#include <stdio.h>
struct M
{
char c : 2;
int n : 2;
};
int main()
{
struct M m;
m.c = 2;
m.n = 1;
m.c = m.c & m.n;
printf("%d\n", m.c);
}
-
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NA
Correct Option: C
0
- What will be the output of the following C code?
#include <stdio.h>
union Un
{
struct str
{
unsigned char ch : 2;
unsigned int n : 2;
};
int ch;
};
int main()
{
union Un u;
Un.str.ch = 2;
printf("%d\n", Un.str.ch);
}
-
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NA
Correct Option: A
Compilation Error
main.c:8:10: warning: declaration does not declare anything
};
^
main.c: In function ‘main’:
main.c:14:9: error: ‘Un’ undeclared (first use in this function)
Un.str.ch = 2;
^~
main.c:14:9: note: each undeclared identifier is reported only once for each function it appears in
- What will be the output of the following C code?
#include <stdio.h>
union Un
{
struct
{
unsigned char c : 1;
unsigned int n : 2;
}Stru;
int ch;
};
int main()
{
union Un u;
u.Stru.c = 1;
printf("%d\n", u.Stru.c);
}
-
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NA
Correct Option: B
1
- What will be the output of the following C code?
#include <stdio.h>
union Un
{
struct
{
unsigned char x : 2;
unsigned int y : 2;
}s;
int x;
};
int main()
{
union Un u.s.x = 2;
printf("%d\n", Un.s.x);
}
-
View Hint View Answer Discuss in Forum
NA
Correct Option: A
Compilation Error
main.c: In function ‘main’:
main.c:13:19: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘.’ token
union Un u.s.x = 2;
^
main.c:13:19: error: expected expression before ‘.’ token
main.c:14:24: error: ‘Un’ undeclared (first use in this function)
printf("%d\n", Un.s.x);
^~
main.c:14:24: note: each undeclared identifier is reported only once for each function it appears in
