Answer Posted / subhani

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1.
main()
{
int i;
printf("%d", &i)+1;
scanf("%d", i)-1;
}

a. Runtime error. b. Runtime error. Access violation. c. Compile error.
Illegal syntax d. None of the above

2. main(int argc, char *argv[])
{
(main && argc) ? main(argc-1, NULL) : return 0;
}


a. Runtime error. b. Compile error. Illegal syntax c. Gets into Infinite
loop d. None of the above

3. main()
{
int i;
float *pf;
pf = (float *)&i;
*pf = 100.00;
printf("%d", i);
}


a. Runtime error. b. 100 c. Some Integer not 100 d. None of the above

4. main()
{
int i = 0xff;
printf("%d", i<<2);
}

a. 4 b. 512 c. 1020 d. 1024

5. #define SQR(x) x * x
main()
{
printf("%d", 225/SQR(15));
}

a. 1 b. 225 c. 15 d. none of the above

6. union u
{
struct st
{
int i : 4;
int j : 4;
int k : 4;
int l;
}st;
int i;
}u;
main()
{ u.i = 100;
printf("%d, %d, %d",u.i, u.st.i, u.st.l);
}


a. 4, 4, 0 b. 0, 0, 0 c. 100, 4, 0 d. 40, 4, 0

7. union u
{ union u
{ int i; int j;
}a[10];
int b[10];
}u;
main()
{
printf("%d", sizeof(u));
printf("%d", sizeof(u.a));
printf("%d", sizeof(u.a[0].i));
}


a. 4, 4, 0 b. 0, 0, 0 c. 100, 4, 0 d. 40, 4, 0

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8. main()
{
int (*functable[2])(char *format, ...) ={ printf, scanf};
int i = 100; (*functable[0])("%d", i);
(*functable[1])("%d", i);
(*functable[1])("%d", i);
(*functable[0])("%d", &i); }

}


a. 100, Runtime error. b. 100, Random number, Random number, Random
number. c. Compile error d. 100, Random number

9. main()
{ int i, j, *p; i = 25;
j = 100; p = &i; /* Address of i is assigned to pointer p */
printf("%f", i/(*p)); /* i is divided by pointer p */
}


a. Runtime error. b. 1.00000 c. Compile error d. 0.00000

10. main()
{ int i, j;
scanf("%d %d"+scanf("%d %d", &i, &j));
printf("%d %d", i, j);
}


a. Runtime error. b. 0, 0 c. Compile error d. the first two values entered
by the user

11. main()
{
char *p = "hello world";
p[0] = 'H';
printf("%s", p);
}

a. Runtime error. b. "Hello world" c. Compile error d. "hello world"

12. main()
{ char * strA;
char * strB = "I am OK";
memcpy( strA, strB, 6);
}

a. Runtime error. b. "I am OK" c. Compile error d. "I am O"

13. How will you print % character?

a. printf("%") b. printf("%") c. printf("%%") d. printf("%%")

14. const int perplexed = 2;
#define perplexed 3
main()
{
#ifdef perplexed
#undef perplexed
#define perplexed 4
#endif
printf("%d",perplexed);
}

a. 0 b. 2 c. 4 d. none of the above

15. struct Foo
{
char *pName;
};
main()
{ struct Foo *obj = malloc(sizeof(struct Foo));
strcpy(obj->pName,"Your Name");
printf("%s", obj->pName); }

a. "Your Name" b. compile error c. "Name" d. Runtime error

16. struct Foo
{ char *pName;
char *pAddress; };
main() { struct Foo *obj = malloc(sizeof(struct Foo));
obj->pName = malloc(100);
obj->pAddress = malloc(100);
strcpy(obj->pName,"Your Name");
strcpy(obj->pAddress, "Your Address");
free(obj); printf("%s", obj->pName);
printf("%s", obj->pAddress); }

a. "Your Name", "Your Address" b. "Your Address", "Your Address" c. "Your
Name" "Your Name" d. None of the above

17. main()
{ char *a = "Hello "; char *b = "World";
printf("%s", stract(a,b));
}


a. "Hello" b. "Hello World" c. "HelloWorld" d. None of the above

18. main()
{ char *a = "Hello ";
char *b = "World";
printf("%s", strcpy(a,b));
}


a. "Hello" b. "Hello World" c. "HelloWorld" d. None of the above

19. void func1
(int (*a)[10])
{ printf("Ok it works");
}
void func2(int a[][10])
{ printf("Will this work?");
}
main()
{ int a[10][10];
func1(a);
func2(a); }


a. "Ok it works" b. "Will this work?" c. "Ok it works Will this work?" d.
None of the above .

20. main()
{
printf("%d, %d", sizeof('c'), sizeof(100));
}

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a. 2, 2 b. 2, 100 c. 4, 100 d. 4, 4

20. main()
{ int i = 100;
printf("%d", sizeof(sizeof(i)));
}


a. 2 b. 100 c. 4 d. none of the above

21. main()
{ int c = 5;
printf("%d", mainc);
}


a. 1 b. 5 c. 0 d. none of the above

22. main()
{ char c; int i = 456; c = i;
printf("%d", c);
}


a. 456 b. -456 c. random number d. none of the above

23. void main ()
{ int x = 10;
printf ("x = %d, y = %d", x,--x++);
}


a. 10, 10 b. 10, 9 c. 10, 11 d. none of the above

24 main()
{ int i =10, j = 20;
printf("%d, %d ", j-- , --i);
printf("%d, %d ", j++ , ++i); }


a. 20, 10, 20, 10 b. 20, 9, 20, 10 c. 20, 9, 19, 10 d. 19, 9, 20, 10

25. main()
{ int x=5;
for(;x==0;x--)
{ printf("x=%d", x--);
}
}


a. 4, 3, 2, 1, 0 b. 1, 2, 3, 4, 5 c. 0, 1, 2, 3, 4 d. none of the above

26. main()
{ int x=5; for(;x!=0;x--)
{ printf("x=%d ", x--);
} }


a. 5, 4, 3, 2,1 b. 4, 3, 2, 1, 0 c. 5, 3, 1 d. none of the above

27. main()
{ int x=5;
{ printf("x=%d", x--);
}
}

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a. 5, 3, 1 b. 5, 2, 1, c. 5, 3, 1, -1, 3 d. -3, -1, 1, 3, 5

28. main()
{ unsigned int bit=256;
printf("%d", bit); }
{ unsigned int bit=512;
printf(%d", bit); } }


a. 256, 256 b. 512, 512 c. 256, 512 d. Compile error

29 main()
{ int i; for(i=0;i<5;i++)
{ printf("%d ", 1L << i);
} }


a. 5, 4, 3, 2, 1 b. 0, 1, 2, 3, 4 c. 0, 1, 2, 4, 8 d. 1, 2, 4, 8, 16

30. main()
{ signed int bit=512, i=5;
for(;i;i--)
{ printf("%d ", bit = (bit >> (i - (i -1)))); } }


a.512, 256, 128, 64, 32 b. 256, 128, 64, 32, 16 c. 128, 64, 32, 16, 8 d.
64, 32, 16, 8, 4

31. main()
{ signed int bit=512, i=5;
for(;i;i--)
{ printf("%d ", bit >> (i - (i -1))); }
}


a. 512, 256, 0, 0, 0 b. 256, 256, 0, 0, 0 c. 512, 512, 512, 512, 512 d.
256, 256, 256, 256, 256

32. main() {
if (!(1&&0)) { printf("OK I am done.");
}
else { printf("OK I am gone.");
} }


a. OK I am done b. OK I am gone c. compile error d. none of the above

33. main()
{
if ((10) && (01))
{ printf("OK I am done.");
}
else
{ printf("OK I am gone.");



} } a. OK I am done b. OK I am gone c. compile error d. none of the above

34. main()
{ signed int bit=512, mBit;
{ mBit = ~bit; bit = bit & ~bit ;
printf("%d %d", bit, mBit);
} }


a. 0, 0 b. 0, 513 c. 512, 0 d. 0, -513


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