· Web viewa) alan alan alan turingb) alan alan turing turingc) alan turing alan turingd) Run time error18. What is the output of this C code?

(1)

What will be output of following c code?

#include<stdio.h>extern int x;int main(){ do{ do{ printf("%o",x); } while(!-2); } while(0); return 0;}int x=8;

(2)What will be output of following c code? #include<stdio.h>int main(){ int i=2,j=2; while(i+1?--i:j++) printf("%d",i); return 0;}

(3)What will be output of following c code?

#include<stdio.h>int main(){

int x=011,i; for(i=0;i<x;i+=3){ printf("Start "); continue; printf("End"); } return 0;}


#include<stdio.h>int main(){ int i,j; i=j=2,3; while(--i&&j++) printf("%d %d",i,j); return 0;}


#include<stdio.h>int main(){ static int i; for(++i;++i;++i) { printf("%d ",i);

if(i==4) break; } return 0;}


#include<stdio.h>int main(){ int i=1; for(i=0;i=-1;i=1) { printf("%d ",i); if(i!=1) break; } return 0;}


#include<stdio.h>int main(){ for(;;) { printf("%d ",10); } return 0;}

(8)What will be output of following c code? #include<stdio.h>

int r();int main(){ for(r();r();r()) { printf("%d ",r()); } return 0;}int r(){ int static num=7; return num--;}

(9)What will be output of following c code? #include<stdio.h>#define p(a,b) a##b#define call(x) #xint main(){ do{ int i=15,j=3; printf("%d",p(i-+,+j)); } while(*(call(625)+3)); return 0;}

(10)

#include<stdio.h>int main(){ int i; for(i=0;i<=5;i++); printf("%d",i)

return 0;}

12)What will be output of following c code?

#include<stdio.h>char _x_(int,...);int main(){ char (*p)(int,...)=&_x_; for(;(*p)(0,1,2,3,4); ) printf("%d",!+2); return 0;}char _x_(int a,...){ static i=-1; return i+++a;}


#include<stdio.h>int main(){ int i; for(i=10;i<=15;i++){ while(i){ do{ printf("%d ",1); if(i>>1) continue; }while(0); break; } } return 0;}

(14)How many times this loop will execute?

#include<stdio.h>int main(){ char c=125; do printf("%d ",c); while(c++); return 0;}

(15)What will be output of following c code? #include<stdio.h>int main(){ int x=123; int i={ printf("c" "++") }; for(x=0;x<=i;x++){ printf("%x ",x); } return 0;}

16 What is the output of this C code?

(Assuming size of int be 4)

1. #include <stdio.h>2. struct temp3. {4. int a;5. int b;6. int c;7. } p[] = {0};

8. main()9. {10. printf("%d", sizeof(p));11. }

a)4

b)12

c)16

d)Can’t be estimated due to ambigous initialization of array

17. What is the output of this C code?

1. #include <stdio.h>2. struct student3. {4. char *name;5. };6. struct student s[2];7. void main()8. {9. s[0].name = "alan";10. s[1] = s[0];11. printf("%s%s", s[0].name, s[1].name);12. s[1].name = "turing";13. printf("%s%s", s[0].name, s[1].name);14. }

a) alan alan alan turing

b) alan alan turing turing

c) alan turing alan turing

d) Run time error


1. #include <stdio.h>2. struct student3. {4. char *name;5. };6. struct student s[2], r[2];7. void main()8. {9. s[0].name = "alan";10. s[1] = s[0];11. r = s;12. printf("%s%s", r[0].name, r[1].name);13. }

a) alan alan

b) Compile time error

c) Varies

d) Nothing


1. #include <stdio.h>2. struct student3. {4. char *name;5. };6. void main()7. {8. struct student s[2], r[2];9. s[1] = s[0] = "alan";10. printf("%s%s", s[0].name, s[1].name);11. }

a) alan alan

b) Nothing

c) Compile time error

d) Varies


1. #include <stdio.h>2. struct student3. {4. };5. void main()6. {7. struct student s[2];8. printf("%d", sizeof(s));9. }

a)2

b)4

c)8

d) 0

. 21)Comment on the output of following C program?

1. #include <stdio.h>2. main()3. {4. int a = 1;

5. printf("size of a is %d, ", sizeof(++a));6. printf("value of a is %d", a);7. };

a. size of a is 4, value of a is 1

b. size of a is 4, value of a is 2

c. size of a is 2, value of a is 2

d. size of a is 2, value of a is 2

22. Which among the following is right?

a. sizeof(struct stemp*) > sizeof(union utemp*) > sizeof(char *)

b. sizeof(struct stemp*) < sizeof(union utemp*) < sizeof(char *)

c. sizeof(struct stemp*) = sizeof(union utemp*) = sizeof(char *)

d. The order Depends on the compiler

23. Comment on the following C code?

1. #include <stdio.h>2. printf("%d", sizeof(strlen("HELLOWORLD")));

a. Output, 4

b. Output, 10

c. Output, 16

d. Error, sizeof cannot evaluate size of a function.

24. Which of the following cannot be used inside sizeof?

a.pointers

b.functions

c.macro definition

d.None of the mentioned

25. Comment on the following C code?

1. #include <stdio.h>2. (sizeof double = 8, float = 4, void = 1)3. #define PI 3.144. int main()5. {6. printf("%d", sizeof(PI));7. }

a. Output is 8

b. Output is 4

c. Output is 1

d. Error, we can’t use sizeof on macro-definitions

. 26)What is the output of this C code?

1. #include <stdio.h>2. struct p3. {4. int x;5. char y;6. };7. int main()8. {9. struct p p1[] = {1, 92, 3, 94, 5, 96};10. struct p *ptr1 = p1;11. int x = (sizeof(p1) / 3);12. if (x == sizeof(int) + sizeof(char))13. printf("%d\n", ptr1->x);14. else15. printf("falsen");16. }

a)Compiletimeerror

b)1

c)Undefinedbehaviour

d)false


1. #include <stdio.h>2. struct p3. {4. int x;5. char y;6. };7. int main()8. {9. struct p p1[] = {1, 92, 3, 94, 5, 96};10. struct p *ptr1 = p1;11. int x = (sizeof(p1) / sizeof(ptr1));12. if (x == 1)13. printf("%d\n", ptr1->x);14. else15. printf("false\n");16. }

a)Compiletimeerror

b)1

c)false

d)Undefinedbehaviour


1. #include <stdio.h>2. struct p3. {4. int x;5. char y;6. };7. typedef struct p* q*;8. int main()9. {10. struct p p1[] = {1, 92, 3, 94, 5, 96};11. q ptr1 = p1;12. printf("%d\n", ptr1->x);13. }

a)Compiletimeerror

b)1

c)Undefinedbehaviour

d)Segmentationfault


1. #include <stdio.h>2. struct p3. {4. int x;5. char y;6. };7. void foo(struct p* );8. int main()9. {10. typedef struct p* q;11. struct p p1[] = {1, 92, 3, 94, 5, 96};12. foo(p1);13. }14. void foo(struct p* p1)15. {16. q ptr1 = p1;17. printf("%d\n", ptr1->x);18. }

a)Compiletimeerror

b)1

c)Segmentationfault

d) Undefined behaviour

30)what is the output of this C code?

1. #include <stdio.h>2. void main()3. {4. char *a[10] = {"hi", "hello", "how"};5. int i = 0, j = 0;6. a[0] = "hey";7. for (i = 0;i < 10; i++)8. printf("%s\n", a[i]);9. }

a) hi hello how Segmentation fault

b) hi hello how followed by 7 null values

c) hey hello how Segmentation fault

d) Depends on compiler


1. #include <stdio.h>2. void main()3. {4. char *a[10] = {"hi", "hello", "how"};5. printf("%d\n", sizeof(a));6. }

a)10

b)13

c)Runtimeerror

d) 40

32 What will be the output of following program ?123456789101112

#include <stdio.h>int main(){ static int var[5]; int count=0; var[++count]=++count; for(count=0;count<5;count++) printf("%d ",var[count]); return 0;}

1. 0 1 0 0 02. 0 2 0 0 03. 0 0 2 0 04. 0 0 0 0 0

32) What will be the output of following program ?12345678

#include <stdio.h>int main(){ int MAX=10; int array[MAX]; printf("size of array is = %d",sizeof(array); return 0;}

1. size of array is = 202. size of array is = 403. size of array is = 44. Error


#include <stdio.h>#define MAX 10int main(){ int array[MAX]={1,2,3},tally; for(tally=0;tally< sizeof(array)/sizeof(int);tally+=1) printf("%d ",*(tally+array)); return 0;}

1. Error2. 1 3 4 5 6 7 8 9 10 113. 1 2 3 0 0 0 0 0 0 04. 0 0 0 0 0 0 0 0 0 0


#include <stdio.h>int main(){ static int x[]={'A','B','C','D','E'},tally; for(tally=0;tally< sizeof(x)/sizeof(int) ; tally+=1) printf("%c,%c,%c\n",*(x+tally)+1,x[tally]+1,*(tally+x)+1); return 0;}

1. Error

2. A,A,AB,B,BC,C,CD,D,DE,E,E

3. B,B,BC,C,CD,D,DE,E,EF,F,F

4. E,E,ED,D,DC,C,CB,B,BA,A,A


#include <stdio.h>int main(){ static int array[]={10,20,30,40,50}; printf("%d...%d",*array,*(array+3)* *array); return 0;}

1. Error2. 10...403. 10...3004. 10....400


#include <stdio.h>int main(){ int a[5]={1,2,3,4,5},b[5]={10,20,30,40,50},tally; for(tally=0;tally< 5;++tally) *(a+tally)=*(tally+a)+ *(b+tally); for(tally=0;tally< 5;tally++) printf("%d ",*(a+tally)); return 0;}

1. 1 2 3 4 52. 10 20 30 40 503. 11 22 33 44 554. Error

Documents

· Web viewa) alan alan alan turingb) alan alan turing turingc) alan turing alan turingd) Run time error18. What is the output of this C code?