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Tejalal Choudhary SDBCT, Indore for queries send email to: tejalal.choudhary@gmail

Tejalal Choudhary SDBCT, Indore for queries send email to: tejalal.choudhary@gmail.com. What will be the output of the program?. #include< stdio.h > #include< conio.h > void main() { int i ; int sum=0; int n[]={2,2,2,2,2}; clrscr (); for( i =0;i<5;i++);

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Tejalal Choudhary SDBCT, Indore for queries send email to: tejalal.choudhary@gmail

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  1. Tejalal ChoudharySDBCT, Indorefor queries send email to: tejalal.choudhary@gmail.com

  2. What will be the output of the program? • #include<stdio.h> • #include<conio.h> • void main() • { • inti; • int sum=0; • int n[]={2,2,2,2,2}; • clrscr(); • for(i=0;i<5;i++); • sum=sum+n[i];//initial value of sum will be stored at n[5] • printf("Sum=%d",sum); • getch(); • } • 0 10 11 none

  3. What will be the output of the program? • #include<stdio.h> • #include<conio.h> • void main( ) • { • inti = 3, *j, **k ; • clrscr(); • j = &i ;//suppose address of i is 200 • k = &j ;//suppose address of j is 400 • printf ( "\n%u", j ) ; • printf ( ",%u", k ) ; • printf ( ",%d", * ( &i ) ) ; • printf ( ",%d", **k ) ; • getch(); • } • 200 400 202 400 • 200 3 400 3 • 400 3 200 3 • 200 400 3 3

  4. What will be the output of the program? • #include<stdio.h> • #include<conio.h> • void main( ) • { • inti = 3, *j, **k ; • clrscr(); • j = &i ; suppose address of i is 200 • k = &j ; //suppose address of j is 400 • printf ( "\n%u", j ) ; • printf ( ",%u", *k ) ; • printf ( ",%u", &j ) ; • printf ( ",%u", k ) ; • printf ( ",%d", *j ) ; • getch(); • } • 200 400 200 400 3 • 3 4 3 4 200 • 400 200 3 4 3 • 200,200,400,400,3

  5. What will be the output of the program? • #include<stdio.h> • #include<conio.h> • void hunk(int *, int *); • void main( ) • { • inti = 4, j = 6 ; • clrscr(); • hunk( &i, &j ) ; • printf ( "\n%d %d", i, j ) ; • getch(); • } • void hunk ( int *i, int *j ) • { • *i = *i * *i ; • *j = *j * *j ; • } • 4 6 • 6 4 • 16 36 • 8 16

  6. Which of the statements is incorrect • int num[6] = { 2, 4, 12, 5, 45, 5 } ; • int[] num={1,2,3,4}; • int n[ ] = { 2, 4, 12, 5, 45, 5 } ; • float press[ ] = { 12.3, 34.2 -23.4, -11.3 } ; • only third • only second • only fourth • none

  7. What will be the output of the program? • #include<stdio.h> • void main(){ • inti = 3, *x ; • float j = 1.5, *y ; • clrscr(); • x = &i ; • y = &j ; • //suppose address of i=200 and address of j=400 • x++ ; • y++ ; • printf( "\n %u ", x ) ; • printf( " %u", y ) ; • getch(); • } • 202 402 • 200 400 • 204 408 • 202 404

  8. What will be the output of the program? • #include<stdio.h> • void main(){ • intarr[ ] = { 10, 20, 30, 45, 67, 56, 74 } ; • int *i, *j ; • clrscr(); • //suppose base address of the array is 100 • i = &arr[1] ; • j = &arr[5] ; • printf ( "%d %d", j - i, *j - *i ) ; • getch(); • } • 2 16 • 4 26 • 2 64 • 4 36

  9. What will be the output of the program? • #include<stdio.h> • void main(){ • intarr[ ] = { 10, 20, 36, 72, 45, 36 } ; • int *j, *k ; • j = &arr [ 4 ] ; • k = ( arr + 4 ) ; • if ( j == k ) printf ( "The two pointers point to the same location" ) ; • else printf ( "The two pointers do not point to the same location" ) ; • getch(); • } • The two pointers point to the same location • The two pointers do not point to the same location • Compilation • errornone

  10. What will be the output of the program? • #include<stdio.h> • void main(){ • int num[ ] = { 24, 34, 12, 44, 56, 17 } ; • //suppose base adress of num is 200 • inti ; • clrscr(); • printf ( "\naddress = %u ", &num[0] ) ; • printf ( "element = %d %d ", num[0], *( num + 0 ) ) ; • printf ( "%d %d", *( 0 + num ), 0[num] ) ; • getch(); • } • address=200 element=34 34 34 34 • address=202 element=24 24 24 24 • address=200 element=12 12 12 12 • address=200 element=24 24 24 24

  11. Which of the statement are correct in C? • intarr[2][3] = { 12, 34, 23, 45, 56, 45 } ; • intarr[ ][3] = { 12, 34, 23, 45, 56, 45 } ; • intarr[2][ ] = { 12, 34, 23, 45, 56, 45 } ; • intarr[ ][ ] = { 12, 34, 23, 45, 56, 45 } ; • 1 and 2 • 1 and 3 • 3 and 4 • 2 and 4

  12. What will be the output of the program? • #include<stdio.h> • void main(){ • int s[4][2] = { { 1234, 56 }, { 1212, 33 }, { 1434, 80 }, { 1312, 78 } } ; • inti=0, j=1; • printf ( "%d ", *( *( s + i ) + j ) ) ; • } • 35 • 80 • 56 • 1234

  13. What will be the output of the program? • #include<stdio.h> • void change(int *, int); • void main(){ • int a[ ] = { 2, 4, 6, 8, 10 } ; • inti ; • change( a, 5 ) ; • for ( i = 0 ; i <= 4 ; i++ ) • printf( "\n%d", a[i] ) ; • getch(); • } • void change ( int *b, int n ) { • inti ; • for ( i = 0 ; i < n ; i++ ) • *( b + i ) = *( b + i ) + 5 ; • } • 2 4 6 8 10 • constant can not be added to pointer • 7 9 11 13 15 • wil print the address plus 5 for each element

  14. Which of the following is false about array in C • Compiler does perform bounds checking on an array. • The array variable acts as a pointer to the zeroth element of the array. In a 1-D array, zeroth element is a single value, whereas, in a 2-D array this element is a 1-D array. • On incrementing a pointer it points to the next location of its type. • If the array is initialized where it is declared, mentioning the dimension of the array is optional

  15. Are the expressions *ptr++ and ++*ptr same? • No • Yes • Can not say, it depends • Partially true

  16. What do the declarations stands for? • int ***j; • i is a pointer to a pointer to an int • i is a integer variable which can hold the address of pointer variable • none of the above • i is a pointer to a pointer to a pointer to an int

  17. Would the following program compile successfully? • void main() • { • char a[]=”Sunstroke”; • char *ptr=”Sunstroke”; • a=”Funstroke”; • ptr=”Funstroke”; • printf(“%s%s”,a,ptr); • } • No • Yes • Can not say • It depends

  18. What will be the output of the program? • #include<stdio.h> • #include<string.h> • void main(){ • char s[]="SDBCTINDORE"; • printf("%d",*(s+strlen(s))); • getch(); • } • 0 • 1 • 2 • 3

  19. What will be the output of the program? • #include<stdio.h> • #include<string.h> • void main(){ • char s[]="SDBCTINDORE"; • char p[]="SDBCTINDORE"; • if(s==p) • printf("Equal"); • else • printf("Not Equal"); • getch(); • } • Equal • Not Equal • Compilation error • none

  20. #include<stdio.h> • #include<string.h> • void disp(struct Book *); • struct Book{ • char aname[20]; • char bname[20]; • int price; • }; • void main(){ • struct Book b1= • {"SDBCT","SDBCE",1000}; • clrscr(); • disp(&b1); • getch(); • } • void disp(struct Book *b){ • printf("%s %s %d",b->aname,b->bname,b->price); • } • SDBCT SDBCE 1000 • Compile time error • Run time error • Syntax error

  21. Which of the following statements are true about file modes • In Read mode “r” Searches file. If the file is opened successfully fopen( ) loads it into memory and sets up a pointer which points to the first character in it. If the file cannot be opened fopen( ) returns NULL. • In write mode “w” Searches file. If the file exists, its contents are overwritten. If the file doesn’t exist, a new file is created. Returns NULL, if unable to open file. • In append “a” mode Searches file. If the file is opened successfully fopen( ) loads it into memory and sets up a pointer that points to the last character in it. If the file doesn’t exist, a new file is created. Returns NULL, if unable to open file. • All of the above

  22. If a function is to be made to return more than one value at a time then return these values indirectly by using a call by reference. • false • true • can not return multiple values • not supported in C

  23. Which of the following operation can not be performed on pointer variables • Addition of two pointers • Multiplication of a pointer with a constant • Division of a pointer with a constant • All of the above

  24. Which of the following is false? • An array is similar to an ordinary variable except that it can store multiple elements of similar type. • C compiler performs bounds checking on an array. • The array variable acts as a pointer to the zeroth element of the array. In a 1-D array, zeroth element is a single value, whereas, in a 2-D array this element is a 1-D array. • Array elements are stored in contiguous memory locations and so they can be accessed using pointers. • 2 and 4 • 1 and 4 • only 2 • none of the above

  25. What is the difference between the 5’s in these two expressions? • int num[5] ; • num[5] = 11 ; • first is particular element, second is type • first is array size, second is particular element • first is particular element, second is array size • both specify array size

  26. When you pass an array as an argument to a function, what actually gets passed? • address of the array • values of the elements of the array • address of the first element of the array • number of elements of the array

  27. if int s[5] is a one-dimensional array of integers, which of the following refers to the third element in the array? • *( s + 2 ) • *( s + 3 ) • s + 3 • s + 2

  28. What will be the output of the program? • #include<stdio.h> • void main(){ • char arr[ ] = "Bamboozled" ; • int len1, len2 ; • len1 = strlen ( arr ) ; • len2 = strlen ( "Humpty Dumpty" ) ; • printf ( "\n%d ",len1 ) ; • printf ( " %d",len2 ) ; • getch(); • } • 11 12 • 9 11 • 10 12 • 10 13

  29. What will be the output of the program? • #include<stdio.h> • void main(){ • int *a[4]; • intm,i=20,j=30,k=23; • clrscr(); • a[0]=&i; • a[1]=&j; • a[2]=&k; • for(m=0;m<3;m++) • printf(" %d",*(a[m])); • getch(); • } • address of all variables • 20 30 23 • Compilation error • none

  30. What will be the output of the program? • #include<stdio.h> • #include<string.h> • void main(){ • FILE *fp ; • char ch ; • fp = fopen ( "Q1.C", "r" ) ; • while ( 1 ) • { • ch = fgetc ( fp ) ; • if ( ch == EOF ) • break ; • printf ( "%c", ch ) ; • } • fclose ( fp ) ; • getch (); • } • Will display the contents of the “Q1.c” file • Run Time Error • Compile time error • File does not found error

  31. What will be the output of the program? • #include<stdio.h> • #include<string.h> • void disp(int *); • void main(){ • inti ; • int marks[ ] = { 55, 65, 75, 56, 78, 78, 90 } ; • for ( i = 0 ; i <= 6 ; i++ ) • disp ( &marks[i] ) ; • getch(); • } • void disp ( int *n ) • { • printf ( "%d ", *n ) ; • } • 55 65 75 56 78 78 90 • 90 78 78 56 75 65 55 • It will print the address of all elements • Compile time error

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