Oracle
Oracle Placement Question Paper
Technical Papers
1. const int MAX=10;
main()
{
enum a {a,b,MAX};
print MAX;
}
ans. 2
2. enum variable is a const variable which can only be assigned a value at initialization or a non const variable which can be assigned any value in the middle of the program?
ans. const variable
3. void *p; what operation cannot be performed on p? ans : arithmetic operation unless it is properly typecasted
4. char **p="Hello";
print p,*p,**p
ans. Hello (null)
warning: suspicious pointer conversion
5. main()
{
char str[]="Geneius";
print (str);
}
print(char *s)
{
if(*s)
print(++s);
printf("%c",*s);
}
ans. suiene
6. what does the function fcloseall() does ?
ans. fcloseall() closes all open streams except stdin,stdout,stderr,stdprn and stdaux
7. main()
{
printf("Genius %d",fun(123));
}
fun(int n)
{
return (printf("%d",n));
}
ans. 123genius3
8. difference between definition and declaration. ans. definition once while declaration more than once
9. find the error?
main()
{
void fun();
fun();
}
void fun()
{
int i=10;
if(i<10)
return 2.0;
return 3.0;
}
ans. no error but warning
10. int a=9,b=5,c=3,d;
d=(b-c)<(c-a) ? a : b;
print d
ans 5
11. 1+2/3*4+1=? Ans. 2
12. In C++, a variable can be defined wherever needed whereas not in C
13. main()
{
int i=4;
fun(i=i/4);
print i;
}
fun(int i)
{
return i/2;
}
ans 1
14. what is an array ?
ans. contiguous collection of memory occupied by similar data types
15. printf(""NITK %%SURAHKAL%% !"");
ans. “NITK %SURATHKAL% !”
16. difference between scanf and gets in case of string input ans. scanf does not accepts white space while gets does
17. table t1 m rows and x cols table t2 n rows and y cols
in t1*t2 rows? cols=?
ans. m*n ,x+y
18. symbol of realtionship between 2 entities?
19 which one cannot come in data modelling a. customer b. student c. office d. speed ans speed
20. can a database table exist without a primary key ?
21. whether higher normal forms better than lower forms as far redundancy is concerned ? ans. higher
22. file is at which level ans. conceptual level
23. what is a foreign key ans. primary key in some other table