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Frequently Asked C interview questions and answers for freshers

(#M40153813) C QUESTION find the out put of the following program Keep an EYE

main()
{
char *str = "12345";
printf("%c %c %cn", *str, *(str++), *(str++));
}

Asked In C Ravi teja (7 years ago)

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(#M40156418) C QUESTION memory Keep an EYE

A 10-bit unsigned integer has the following range:
Options:
[1] 0 to 1000
[2] 0 to 1024
[3] 1 to 1025
[4] 0 to 1023

Asked In C JANARTHANAN RAM (6 years ago)

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(#M40165491) C QUESTION Keep an EYE

Consider the following code:

for i= m to n increment 2
{ print "Hello!" }

Assuming m < n and exactly one of (m,n) is even, how many times will Hello be printed?
Option 1 : (n - m + 1)/2
Option 2 : 1 + (n - m)/2
Option 3 : 1 + (n - m)/2 if m is even, (n - m + 1)/2 if m is odd
Option 4 : (n - m + 1)/2 if m is even, 1 + (n - m)/2 if m is odd

Asked In C Dastagiri Sha (4 years ago)

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(#M40031857) C QUESTION Keep an EYE

What is the output of this C code?

#include
int main()
{
int i = 10;
void *p = &i;
printf("%dn", (int)*p);
return 0;
}
a) Compile time error
b) Segmentation fault/runtime crash
c) 10
d) Undefined behaviour

Asked In C Rajendra Singh (9 years ago)

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(#M40152256) C QUESTION Keep an EYE

Which of the following is the correct syntax for declaration of a structure?
Select one:
struct_name;
Struct struct_name;
struct
{
Struct_name;
}
struct struct_name;

Asked In C priya (7 years ago)

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(#M40018745) C QUESTION C- QUESTIONS Keep an EYE

What will be the output of the program?
#include
int main()
{
static int a[20];
int i = 0;
a[i] = i ;
printf("%d, %d, %dn", a[0], a[1], i);
return 0;
}
Options
1) 1, 0, 1
2) 1, 1, 1
3) 0, 0, 0
4) 0, 1, 0

Asked In C (9 years ago)

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(#M40167106) C QUESTION how this works Keep an EYE

int i=3,j=2,k=0,m;
m = ++i && ++j || ++k;
printf(“%d %d %d %d”, i , j, k,m);

Asked In C Krishna Kumar M (1 year ago)

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(#M40018741) C QUESTION C- QUESTIONS Keep an EYE

What will be the output of the program?
#include
int main()
{
char str[]="C-program";
int a = 5;
printf(a >10?"Psn":"%sn", str);
return 0;
}
Options
1) C-program
2) Ps
3) Error
4) None of above

Asked In C (9 years ago)

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(#M40029303) C QUESTION C Keep an EYE

Q. main()
{
show();
}
void show()
{
printf("I'm the greatest");
}

A. Compier error: Type mismatch in redeclaration of show.

Explanation: When the compiler sees the function show it doesn't know anything about it. So
the default return type (ie, int) is assumed. But when compiler sees the actual definition of show
mismatch occurs since it is declared as void. Hence the error.
The solutions are as follows:
1. declare void show() in main() .
2. define show() before main().
3. declare extern void show() before the use of show().

Asked In C MAN (9 years ago)

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(#M40157921) C QUESTION pseudo code Keep an EYE

What will be the output of the following pseudo-code statements:
integer a = 456, b, c, d =10
b = a/d
c = a - b
print c

Asked In C Ashok (6 years ago)

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