c aptitude questions - ouredu...

C APTITUDE QUESTIONS

Q1. Mark the output of the given arithmetic expression-

5+3*2%10-8*6

a) -42

b) -37

c) -28

d) -32

Q2. Mark the output of the statement-

int a=10; printf("%d &i",a,10);

a) 10

b) 10 10

c) Error

d) None of these

Q3. The output of the following statement-

printf("%X%x%ci%x",11,10,'s',12);

a) error

b) Bas94c

c) basc

d) none of these

Q4. Output of the following statement-

int a = 4, b = 7, c; c = a = = b; printf("%i", c);

a) 0

b) 1

c) error

d) garbage value

Q 5. Output of the given statements-

int a = 5, b = 2, c = 10, i = a>b

void main()

{

printf("hello"); main();

}

a) 1

b) 2

c) 3

d) infinite number of times

Q6. Output of the given statement-

int x[3] = {0,1,2}; printf("%d %d %D",x[2], x[1], x[0]);

a) 000

b) 210

c) 021

d) 02%D

Q7. Output of the given statement-

printf( 3 + "goodbye");

a) dbye

b) odbye

c) bye

d) goodbye

Q8. Output of the following statement-

long int a = scanf("%ld%ld", &a, &a);

printf("%ld", a);

a) error

b) 2

c) 0

d) garbage value

Q9. Output of the following program-

#include

void main()

{

int a = 2;

switch(a)

{

case 1: printf("goodbye"); break; case 2: continue; case 3: printf("bye"); } } a) bye b) goodbye c) byegoodbye d) error Q10. Output of the following statement- int i = 1, j; j=i----2;

printf("%d", j); a) 2 b) -3 c) 3 d) error Q11. Mark the output of following program- #include main() { int x, y = 10; x = y * NULL; printf("%d", x); } a) 10 b) 0 c) error d) garbage value

Q12. Mark the output of following statement- char x[ ] = "hello hi"; printf("%d%d", sizeof(*x), sizeof(x)); a) 29 b) 18 c) 88 d) 19 Q13. Mark the output of the following statement-

void main()

{

int a=10, b=20;

char x=1, y=0;

if(a, b, x, y)

{

printf("MONK");

}

}

a) MONK

b) ONK

c) Compilation Error

d) No Output

Q14. Mark the output of the following statement-

int i = 3;

printf("%d%d", i, i++);

a) 34

b) 44

c) 43

d) 33

Q15. Mark the output of statement 7.5 % 3-

a) 1.5 b) 1 c) No output d) Error

Q16. The three standard files which can be accessed by any program in C language are-

a) Standard error file, standard output file, standard input file

b) stdin, stderr, stdout

c) Keywords, stderr, screen

d) All of above

e) None of above

Q.17 What is an identifier in C language?

a) Name of thing say variable or function b) Made up of letters, numerals and the underscore sign c) Contain both uppercase and lowercase letters d) All of above

Q.18 Which is the single character input/output functions-

a) scanf( ) and printf( ) b) getchar( ) and putchar( ) c) getchar( ) and printf( ) d) scanf( ) and putchar( )

Q19. The operator determining the Precedence-

a) Evaluated first b) is most important c) is fastest d) Operates on the largest number

Q20. In C language, the NULL statement doing nothing is-

a) , b) ; c) : d) .

Q21. The operators && and || are named as-

a) Arithmetic operators b) Logical operators c) Equality operators d) Relational operators

Q22. Give the output of following C language code-

#include <stdio.h> void main() { int k = 8; int x = 0 == 1 && k++; printf("%d%d\n", x, k); }

a) 0 9 b) 0 8 c) 1 9 d) 1 8


#include <stdio.h> void main() { 1 < 2 ? return 1: return 2; }

a) returns 1

b) Varies

c) returns 2

d) Compilation time error


#include <stdio.h> int main() { int x = 2, y = 1; x *= x + y; printf("%d\n", x); return 0; } a) 6 b) 5 c) Undefined behaviour shown d) Compilation time error


#include <stdio.h> int main() { int x = 2, y = 2; x /= x / y; printf("%d\n", x); return 0; }

a) 2 b) 0.5 c) 1 d) Undefined behaviour shown


main() { char *p; int *q; long *r; p=q=r=0; p++; q++; r++; printf("%p...%p...%p", p, q, r); }


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; }

}


main() { extern int i; i=20; printf("%d",i); }


void main() { int const * p=5; printf("%d",++(*p)); }


main() { int c=- -2; printf("c=%d",c); }


main() { int c=- -2; printf("c=%d",c); }


main() { int i=10; i=!i>14; Printf ("i=%d", i); }


#include <stdio.h> #define a 10 main() { #define a 50 printf("%d",a); }


main() { clrscr(); } clrscr();


enum colors {BLACK,BLUE,GREEN} main() { printf("%d).%d).%d", BLACK, BLUE, GREEN); return(1); }


main() { int i; printf("%d",scanf("%d",&i)); // value 10 is given as input here }


main( ) { int a[2][3][2] = {{{2,4}, {7,8}, {3,4}},{{2,2},{2,3},{3,4}}}; printf(“%u %u %u %d \n”, a, *a, **a, ***a); printf(“%u %u %u %d \n”, a+1, *a+1, **a+1, ***a+1); }


main() { int i=-1; +i; printf("i = %d, +i = %d \n", i, +i); }

Q39. State the files which automatically opened whenever a C file is executed?


main() { char *str1="abcd"; char str2[]="abcd"; printf("%d %d %d",sizeof(str1),sizeof(str2),sizeof("abcd")); }


#define FALSE -1 #define TRUE 1 #define NULL 0 main() { if(NULL) puts("NULL"); else if(FALSE) puts("TRUE"); else puts("FALSE"); }


main() { int k=1; printf("%d==1 is ""%s", k, k==1?"TRUE":"FALSE"); }


main() { int *j; { int i=10; j=&i; } printf("%d",*j); }


#include<stdio.h> main() { register i=5; char j[]= "hello"; printf("%s %d",j,i); }


main() { int i=_l_abc(10); printf("%d\n",--i); } int _l_abc(int i) { return(i++); }

Q46. Mark the true statements about static variables?

a) Only Global variables can be defined b) Only local variables can be defined c) Both Local and Global Variables can be defined d) None of these

Q47. An ampersand used in front of the pointer variable gives

a) Address of the value b) Value present at the address c) Depends on the actual scenario d) None of these

c aptitude questions - ouredu...

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