Structures
- What will be the output of the following C code?
#include <stdio.h>
struct Result
{
int n1;
char n2;
struct Result *p;
};
int main()
{
struct Result Result = {100, 200, &Result};
printf("%d\n", Result.p->n1);
return 0;
}
-
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NA
Correct Option: C
100
- What will be the output of the following C code?
#include <stdio.h>
typedef struct p *q;
struct p
{
int n1;
char n2;
q ptr;
};
typedef struct p *q;
int main()
{
struct p p = {101, 202, &p};
printf("%d\n", p.ptr->n1);
return 0;
}
-
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NA
Correct Option: C
101
- Presence of loop in a linked list can be tested by ________.
-
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NA
Correct Option: A
Comparing the address of nodes by address of every other node
- What will be the output of the following C code?
#include <stdio.h>
typedef struct p *q;
int main()
{
struct p
{
int num1;
char num2;
q ptr;
};
struct p p = {50, 55, &p};
printf("%d\n", p.ptr->x);
return 0;
}
-
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NA
Correct Option: C
Compilation Error
main.c: In function ‘main’:
main.c:11:29: warning: initialization from incompatible pointer type [-Wincompatible-pointer-types]
struct p p = {1, 2, &p};
^
main.c:11:29: note: (near initialization for ‘p.ptr’)
main.c:12:29: error: dereferencing pointer to incomplete type ‘struct p’
printf("%d\n", p.ptr->x);
^~
- What will be the output of the following C code?
#include <stdio.h>
int main()
{
typedef struct B *ptr;
struct B
{
int num1;
char num2;
ptr ptr1;
};
struct B b = {15, 25, &b};
printf("%d\n", b.ptr1->num1);
return 0;
}
-
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NA
Correct Option: D
15
