SAP Placement Papers - Interview Questions:
1. If int is 2 bytes wide.What will be the output of the program?
#include
void fun(char**);
int main()
{
char *argv[] = {"ab", "cd", "ef", "gh"};
fun(argv);
return 0;
}
void fun(char **p)
{
char *t;
t = (p+= sizeof(int))[-1];
printf("%s\n", t);
}
A.ab B.cd C.ef D.gh
Answer: B
2. What will be the output of the program if the array begins at 65486 and each integer occupies 2 bytes?
int main()
{
int arr[] = {12, 14, 15, 23, 45};
printf("%u, %u\n", arr+1, &arr+1);
return 0;
}
A.12, 65490 B.14, 65492 C.65488, 65496 D.64490, 65498
Answer: C
Explanation:
Here, the base address(also the address of first element) of the array is 65486. => Here, arr is reference to arr has type "pointer to int". Therefore, arr+1 is pointing to second element of the array arr memory location. Hence 65486 + 2 bytes = 65488 => Then, &arr is "pointer to array of 5 ints". Therefore, &arr+1 denotes "5 ints * 2 bytes * 1 = 10 bytes". Hence, begining address 65486 + 10 = 65496. So, &arr+1 = 65496. Hence the output of the program is 65488, 65496.
3. Recursive functions are executed in a
A.last in first out order B.first in First out order C.Are maintained in a stack D.none of the above
Answer: A
4. What will be the output of the program?
#include
int main()
{
int i=3, j=4, k, l;
k = addmult(i, j);
l = addmult(i, j);
printf("%d %d\n", k, l);
return 0;
}
int addmult(int ii, int jj);
{
int kk, ll;
kk = ii + jj;
ll = ii * jj;
return (kk, ll);
}
A.Function addmult()return 7 and 12 B.No output C.Error: Compile error D.None of above
Answer: C
Explanation:
There is an error in this statement int addmult(int ii, int jj);. We have to remove the semi-colon, because it was an definition of the function addmult()
5. Point out the error if any in the while loop.
main()
{
int i =0;
while()
{
printf("%d",i++);
if(i>10)
break;
}
}
A.the condition in the while loop is a must B.the while lop must be replaced by a for loop
Answer: A
6. What will be the output of the program?
#include
void fun(int);
int main()
{
int a=3;
fun(a);
return 0;
}
void fun(int n)
{
if(n > 0)
{
fun(--n);
printf("%d,", n);
fun(--n);
}
}
A.0, 2, 1, 0 B.1, 1, 2, 0 C.0, 1, 0, 2 D.0, 1, 2, 0
Answer: D
7. What will be output of following c program?
int main()
{
for(printf("1");!printf("0");printf("2")) printf("Sachin");
return 0;
}
A.10sachin2 B.10sachin C.10sachin210sachin2 D.10
Answer: D
8. What will be the output of the program?
#include
int main()
{
int fun();
int i;
i = fun();
printf("%d\n", i);
return 0;
}
int fun()
{
_AX = 1990;
}
A.Garbage value B.0 (Zero) C.1990 D.No output
Answer: C
Explanation:
The return value of the function is taken from the Accumulator _AX=1990.
9. What will be output of following c program?
void main()
{
int a[]={5,10,15};
int i=0,num;
num=a[++i]+ ++i+(++i);
printf("%d",num);
}
A.6 B.17 C.16 D.12
Answer:A
10. What will be the output of the program?
#include
int main()
{
int i = 5;
while(i-- >= 0)
printf("%d,", i);
i = 5;
printf("\n");
while(i-- >= 0)
printf("%i,", i);
while(i-- >= 0)
printf("%d,", i);
return 0;
}
A. 4, 3, 2, 1, 0, -1
4, 3, 2, 1, 0, -1
B. 5, 4, 3, 2, 1, 0
5, 4, 3, 2, 1, 0
C. Error
D. 5, 4, 3, 2, 1, 0
5, 4, 3, 2, 1, 0
5, 4, 3, 2, 1, 0
A.A B.B C.C D.D
Answer: A
11. Point out the error in the following program.
#include
int main()
{
char str[] = "Freshersworld";
printf("%.#s %2s", str, str);
return 0;
}
A.in Array declaration B.printf statement C.unspecified character in printf D.No error
Answer: D
12. Find the output of following snippet?
# include
void main()
{
char letter = 'Z';
printf("%c",letter);
}
A.Z B.90 C.Garbage Value D.error
Answer: A
13. What will be the output of the program?
#include
#define SQR(x)(x*x)
int main()
{
int a, b=3;
a = SQR(b+2);
printf("%d\n", a);
return 0;
}
A.25 B.11 C.Error D.Garbage value
Answer: B
Explanation:
11 Answer: 11 Explanation: a = SQR(b+2); becomes, => a = b+2 * b+2; Here SQR(x) is replaced by macro to x*x . => a = 3+2 * 3+2; => a = 3 + 6 + 2; => a = 11;
14. What will be the output of the program if value 25 given to scanf()?
#include
int main()
{
int i;
printf("%d\n", scanf("%d", &i));
return 0;
}
A.1 B.2 C.5 D.25
Answer: A
Explanation:
The scanf function returns the number of input is given. printf("%d\n", scanf("%d", &i)); The scanf function returns the value 1(one). Therefore, the output of the program is '1'.
15. void main()
{
char far *farther, *farthest;
printf("%d..%d",sizeof(farther),sizeof(farthest));
}
What is the ouput of above snippet?
A.2.4 B.syntax error C.compiler error D.4.2
Answer: D
16. What will be the content of 'file.c' after executing the following program?
#include
int main()
{
FILE *fp1, *fp2;
fp1=fopen("file.c", "w");
fp2=fopen("file.c", "w");
fputc('A', fp1);
fputc('B', fp2);
fclose(fp1);
fclose(fp2);
return 0;
}
A.B B.A B C.B B D.Error in opening file 'file1.c'
Answer: A
17. What is the output of following snippet?
main()
{
int c[] = { 2.8,3.4,4,6.7,5};
int j,*p=c,*q=c;
for(j=0;j<5;j++)
{
printf("%d",*c);
++q;
}
for (j =0; j<5;j++)
{
printf("%d",*p);
++p;
}
}
A.syntax error B.compiler error C.2 2 2 2 2 2 3 4 6 5 D.5 6 4 5 2 2 2 2
Answer: C
18. What will be the output of the program ?
#include
int main()
{
float arr[] = {12.4, 2.3, 4.5, 6.7};
printf("%d\n", sizeof(arr)/sizeof(arr[0]));
return 0;
}
A.4 B.5 C.6 D.7
Answer: A
Explanation:
The variable arr has 4 elements. The size of the float variable is 4 bytes. Hence 4 elements x 4 bytes = 16 bytes sizeof(arr[0]) is 4 bytes Hence 16/4 is 4 bytes Hence the output of the program is '4'.
19. main()
{
char *p;
p ="Hello";
printf ("%c\n"' *&*p);
}
What is the output of above snippet ?
A.H B.syntax error C.compiler error D.E
Answer: A
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20. main()
{
int i;
print("%d",scanf("%d",&i));
// value 10 is given to the input here
}
What is the ouput of above snippet?
A.1 B.compiler error C.syntax error D.2
Answer: A
21. What will be output of following c program?
void main()
{
int a,i=4;
a=- -i+- -i+- -5;
printf("%d %d",a,i);
}
A.13 4 B.-3 2 C.7 2 D.-13 4
Answer: A
22. Find the output from following program?
#include
int main()
{
int a = 10, b;
a >=5 ? b=100: b=200;
printf("%d\n", b);
return 0;
}
A.100 B.200 C.Error: L value required for b D.Garbage value
Answer: C
Explanation:
variable b is not assigned
23. What will be output of following c program?
void main()
{
int z;
z=(5,3,2);
printf("%d",z);
}
A.5 B.3 C.2 D.10
Answer: C
24. What will be the output of the program?
#include
int main()
{
unsigned int i = 65535;
/* Assume 2 byte integer*/
while(i++ != 0)
printf("%d",++i);
printf("\n");
return 0;
}
A.Infinite loop B.0 1 2 ... 65535 C.0 1 2 ... 32767 - 32766 -32765 -1 0 D.No output
Answer: A
25. What will be output of following c program?
int main()
{
float **(*ptr)[4]=(float **(*)[4]);
ptr+=5;
printf("%d %d",ptr,sizeof ptr); return 0;
}
A.0 2 B.5 2 C.4 2 D.40 2
Answer: D
26. What will be output of following c program?
struct myStruct
{
int a;
char b;
}
*ptr;
int main()
{
struct myStruct ms={400,'A'};
printf("%d %d",ptr->a,ptr->b);
return 0;
}
A.400 A B.400 65 C.400 97 D.0 0
Answer: D
27. What will be the output of the program?
#include
int main()
{
int i;
i = printf("How r u\n");
i = printf("%d", i);
printf("%d", i);
return 0;
}
A.How r u 7 2 B.How r u 8 2 C.How r u 1 1 D.Error: cannot assign printf to variable
Answer: B
28. What will be output of following c program?
#include "string.h"
typedef struct stu1
{
int roll;
char *name;
double marks;
}
STU1;
typedef struct stu2
{
int roll;
char *name;
double marks;
}
STU2;
void main()
{
STU1 s1={25,"Rohit",87.43},*p1;
STU2 *p2; p1=&s1;
memcpy(p2,p1,4);
printf("Roll : %d\n",p2->roll);
printf("Name : %s\n",p2->name);
printf("Marks : %lf",p2->marks);
}
A.Roll : 25 Name : Rohit Marks : 87.430000 B.Roll : 25 Name : Rohit Marks : 0.000000 C.Roll : 0 Name : Rohit Marks : 87.430000 D.Roll : 0 Name : null Marks : 0.000000
Answer: B
29. Assume integer is 2 bytes wide. How many bytes will be allocated for the following code?
#include
#include
#define MAXROW 3
#define MAXCOL 4
int main()
{
int (*p)[MAXCOL];
p = (int (*) [MAXCOL])malloc(MAXROW *sizeof(*p));
return 0;
}
A.56 bytes B.128 bytes C.24 bytes D.12 bytes
Answer: C
30. What will be output when you will execute following c code?
void main()
{
volatile int a=11;
printf("%d",a);
}
A.Garbage B.11 C.2 D.We cannot predict
Answer: D
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