| Other C Code Interview Questions |
| |
| Question | Asked @ | Answers |
| |
| 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 | HCL | 1 |
| int aaa() {printf(“Hi”);}
int bbb(){printf(“hello”);}
iny ccc(){printf(“bye”);}
main()
{
int ( * ptr[3]) ();
ptr[0] = aaa;
ptr[1] = bbb;
ptr[2] =ccc;
ptr[2]();
} | | 1 |
| main( )
{
int a[ ] = {10,20,30,40,50},j,*p;
for(j=0; j<5; j++)
{
printf(“%d” ,*a);
a++;
}
p = a;
for(j=0; j<5; j++)
{
printf(“%d ” ,*p);
p++;
}
} | | 1 |
| How to access command-line arguments? | | 4 |
| void main()
{
char far *farther,*farthest;
printf("%d..%d",sizeof(farther),sizeof(farthest));
} | | 1 |
| What is the output of the program given below
main()
{
signed char i=0;
for(;i>=0;i++) ;
printf("%d\n",i);
} | | 1 |
| how to return a multiple value from a function? | Wipro | 2 |
| How to return multiple values from a function?
| | 4 |
| main( )
{
void *vp;
char ch = ‘g’, *cp = “goofy”;
int j = 20;
vp = &ch;
printf(“%c”, *(char *)vp);
vp = &j;
printf(“%d”,*(int *)vp);
vp = cp;
printf(“%s”,(char *)vp + 3);
} | | 1 |
| Given n nodes. Find the number of different structural
binary trees that can be formed using the nodes. | Aricent | 7 |
| main()
{
int i=10,j=20;
j = i, j?(i,j)?i:j:j;
printf("%d %d",i,j);
} | | 1 |
| String reverse with time complexity of n/2 with out using
temporary variable. | NetApp | 8 |
| Given only putchar (no sprintf, itoa, etc.) write a routine
putlong that prints out an unsigned long in decimal. | | 5 |
| void main()
{
char a[]="12345\0";
int i=strlen(a);
printf("here in 3 %d\n",++i);
} | | 1 |
| # include <stdio.h>
int one_d[]={1,2,3};
main()
{
int *ptr;
ptr=one_d;
ptr+=3;
printf("%d",*ptr);
} | | 1 |
| What is the subtle error in the following code segment?
void fun(int n, int arr[])
{
int *p=0;
int i=0;
while(i++<n)
p = &arr[i];
*p = 0;
} | | 1 |
| void main()
{
if(~0 == (unsigned int)-1)
printf(“You can answer this if you know how values are
represented in memory”);
} | | 1 |
| main()
{
if ((1||0) && (0||1))
{
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 | HCL | 1 |
| void main()
{
int *i = 0x400; // i points to the address 400
*i = 0; // set the value of memory location pointed by i;
} | | 1 |
| program to find magic aquare using array | HCL | 3 |
| |
| For more C Code Interview Questions Click Here |
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