Csc Placement Paper

Pages: 16 (3975 words) / Published: Feb 20th, 2012
1. Point out the error in the following program

main()
{
const char *fun();
*fun()='A';
} const char *fun()
{
return "Hello";
}
Ans. fun() returns to a "const char" pointer which cannot be modified

2. What would be the output of the following program?

main()
{
const int x=5; int *ptrx; ptrx=&x; *ptrx=10; printf("%d",x); }
a) 5 b) 10 c) Error d) Garbage value

3. A switch statement cannot include

a) constants as arguments b) constant expression as arguments
c) string as an argument d) None of the above

4. How long the following program will run?

main()
{
printf("\nSonata Software"); main(); }
a) infinite loop b) until the stack overflows
c) All of the above d) None of the above

5. On combining the following statements, you will get char*p; p=malloc(100);

a) char *p= malloc(100) b) p= (char*)malloc(100)
c) All of the above d) None of the above

6.Point out the error in the following program

main()
{
int a=10; void f(); a=f(); printf("\n%d",a);
}
void f()
{
printf("\nHi");
}
Ans. The program is trying to collect the value of a "void" function into an integer variable.

7. In the following program how would you print 50 using p?

main()
{
int a[]={10, 20, 30, 40, 50}; char *p; p= (char*) a;
}
Ans. printf("\n%d",*((int*)p+4));

8. Would the following program compile?

main()
{
int a=10,*j; void *k; j=k=&a; j++; k++; printf("\n%u%u",j,k);
}
a) Yes b) No, the format is incorrect
c) No, the arithmetic operation is not permitted on void pointers
d) No, the arithmetic operation is not permitted on pointers

9. According to ANSI specifications which is the correct way of declaring main() when it receives command line arguments?

a) main(int argc, char *argv[]) b) main(argc,argv) int argc; char *argv[];
c) main() {int argc; char *argv[]; } d) None of the above

10. What error would the following function give on compilation?

f(int a, int b)
{
int a; a=20; return a;

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