| Other C Code Interview Questions |
| |
| Question | Asked @ | Answers |
| |
| char *someFun1()
{
char temp[ ] = “string";
return temp;
}
char *someFun2()
{
char temp[ ] = {‘s’, ‘t’,’r’,’i’,’n’,’g’};
return temp;
}
int main()
{
puts(someFun1());
puts(someFun2());
} | | 1 |
| Give a very good method to count the number of ones in a 32
bit number.
(caution: looping through testing each bit is not a solution) | Microsoft | 5 |
| main()
{
char *a = "Hello ";
char *b = "World";
clrscr();
printf("%s", strcpy(a,b));
}
a. “Hello”
b. “Hello World”
c. “HelloWorld”
d. None of the above | HCL | 1 |
| How to access command-line arguments? | | 4 |
| main()
{
int a=10,*j;
void *k;
j=k=&a;
j++;
k++;
printf("\n %u %u ",j,k);
} | | 1 |
| How to reverse a String without using C functions ? | Wipro | 13 |
| main()
{
char *str1="abcd";
char str2[]="abcd";
printf("%d %d %d",sizeof(str1),sizeof(str2),sizeof("abcd"));
} | | 1 |
| Give a one-line C expression to test whether a number is a
power of 2. | Microsoft | 8 |
| How will you print % character?
a. printf(“\%”)
b. printf(“\\%”)
c. printf(“%%”)
d. printf(“\%%”) | HCL | 1 |
| main()
{
char i=0;
for(;i>=0;i++) ;
printf("%d\n",i);
} | | 1 |
| void main()
{
char ch;
for(ch=0;ch<=127;ch++)
printf(“%c %d \n“, ch, ch);
} | | 1 |
| How to read a directory in a C program?
| | 4 |
| char *someFun()
{
char *temp = “string constant";
return temp;
}
int main()
{
puts(someFun());
} | | 1 |
| #include <stdio.h>
#define a 10
main()
{
#define a 50
printf("%d",a);
} | | 1 |
| main()
{
char p[ ]="%d\n";
p[1] = 'c';
printf(p,65);
} | | 1 |
| Sorting entire link list using selection sort and insertion
sort and calculating their time complexity | NetApp | 1 |
| main()
{
int i = 100;
clrscr();
printf("%d", sizeof(sizeof(i)));
}
a. 2
b. 100
c. 4
d. none of the above | HCL | 2 |
| void main()
{
static int i=5;
if(--i){
main();
printf("%d ",i);
}
} | | 1 |
| how to return a multiple value from a function? | Wipro | 5 |
| main()
{
extern i;
printf("%d\n",i);
{
int i=20;
printf("%d\n",i);
}
} | | 1 |
| |
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