This set of C Multiple Choice Questions & Answers (MCQs) focuses on “Pointers to Pointers – 1”.
Pre-requisite for C Pointers to Pointers MCQ set: Video Tutorial on C Pointers.
1. What will be the output of the following C code?
#include <stdio.h>void main()
{int k = 5;
int *p = &k;
int **m = &p;
printf("%d%d%d\n", k, *p, **m);
}
a) 5 5 5
b) 5 5 junk value
c) 5 junk junk
d) Run time error
View Answer
Explanation: None.
2. What will be the output of the following C code?
#include <stdio.h>void main()
{int k = 5;
int *p = &k;
int **m = &p;
printf("%d%d%d\n", k, *p, **p);
}
a) 5 5 5
b) 5 5 junk value
c) 5 junk junk
d) Compile time error
View Answer
Explanation: None.
3. What will be the output of the following C code?
#include <stdio.h>void main()
{int k = 5;
int *p = &k;
int **m = &p;
**m = 6;
printf("%d\n", k);
}
a) 5
b) Compile time error
c) 6
d) Junk
View Answer
Explanation: None.
4. What will be the output of the following C code?
#include <stdio.h>void main()
{int a[3] = {1, 2, 3};
int *p = a;
int *r = &p;
printf("%d", (**r));
}
a) 1
b) Compile time error
c) Address of a
d) Junk value
View Answer
Explanation: None.
5. What will be the output of the following C code?
#include <stdio.h>void main()
{int a[3] = {1, 2, 3};
int *p = a;
int **r = &p;
printf("%p %p", *r, a);
}
a) Different address is printed
b) 1 2
c) Same address is printed
d) 1 1
View Answer
Explanation: None.
6. How many number of pointer (*) does C have against a pointer variable declaration?
a) 7
b) 127
c) 255
d) No limits
View Answer
Explanation: None.
7. What will be the output of the following C code?
#include <stdio.h>int main()
{int a = 1, b = 2, c = 3;
int *ptr1 = &a, *ptr2 = &b, *ptr3 = &c;
int **sptr = &ptr1; //-Ref
*sptr = ptr2;
}
a) ptr1 points to a
b) ptr1 points to b
c) sptr points to ptr2
d) none of the mentioned
View Answer
Explanation: None.
8. What will be the output of the following C code?
#include <stdio.h>void main()
{int a[3] = {1, 2, 3};
int *p = a;
int **r = &p;
printf("%p %p", *r, a);
}
a) Different address is printed
b) 1 2
c) Same address is printed
d) 1 1
View Answer
Explanation: None.
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