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C Interview Questions & Answers

Below we have listed all the C Interview Questions and answers. Feel free to comment on any C Interview Questions or answer by the comment feature available on the page.

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C Interview Questions & Answers

C is a high-level and general purpose programming language that is ideal for developing firmware or portable applications. Originally intended for writing system software, C was developed at Bell Labs by Dennis Ritchie for the Unix Operating System (OS) in the early 1970s. With the increasing popularity of object-oriented programming, C is being rapidly replaced as "the" programming language by C++, a superset of the C language that uses an entirely different set of programming concepts, and by Java, a language similar to but simpler than C++, that was designed for use in distributed networks.

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Subcategories for C Interview Questions & Answers :-

Following are sub categories for which Interview Questions & Answers are available under C Interview Questions & Answers. Please select the appropriate sub-category:-

Arrays in C Interview Questions & Answers (18)

Branches & Loops in C Interview Questions & Answers (22)

C Basics Interview Questions & Answers (92)

Dynamic Memory Allocation in C Interview Questions & Answers (21)

File Operations in C Interview Questions & Answers (16)

Functions in C Interview Questions & Answers (59)

Operators in C Interview Questions & Answers (22)

Pointers in C Interview Questions & Answers (43)

Strings in C Interview Questions & Answers (32)

Structures in C Interview Questions & Answers (39)

Variables in C Interview Questions & Answers (38)

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Question
Rating
View Answer
void main()
{
float a= 0.7;
if (a < 0.7)
printf("c");
else
printf("c++");
}
Output of the above program is c. Why? Whereas the same program with 0.8 instead of 0.7 gives c++ as the output? Why explain?
3.9 Rating
View Answer
What is page thrashing?
3.7 Rating
View Answer
main()
{
extern int i;
i=20;
printf("%d",i);
}


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


4.1 Rating
View Answer
#define SQR(x) x * x
main()
{
printf("%d", 225/SQR(15));
}


4.2 Rating
View Answer
What are enumerations?
3.5 Rating
View Answer
How to find GCD of four numbers?
3.8 Rating
View Answer
To which numbering system can the binary number 1101100100111100 be easily converted to?
3.6 Rating
View Answer
Write a program to remove comment lines and blank lines from an error free c program.
3.1 Rating
View Answer
When should the register modifier be used? Does it really help?
3.0 Rating
View Answer
What is a default TCP/IP socket assigned for SQL Server?
2.9 Rating
View Answer
When should a type cast be used?
3.6 Rating
View Answer
What is difference between the test effort and the test procedure?
3.0 Rating
View Answer
If the following program (myprog) is run from the command line as myprog monday tuesday wednesday thursday
What would be the output?

main(int argc, char *argv[])
{
while(--argc >0)
printf("%s",*++argv);
}




4.9 Rating
View Answer
main()
{
int i=3;
switch(i)
{
default:printf("zero");
case 1: printf("one");
break;
case 2:printf("two");
break;
case 3: printf("three");
break;
}
}


5.0 Rating
View Answer
main()
{
int x=5;
clrscr();
for(;x==0;x--) {
printf("x=%dn?", x--);
}
}


4.9 Rating
View Answer
What will be the output of the following program in UNIX OS with CC compiler and TC compiler?

int main()
{
int i=5;
printf(" %d",++i + ++i + ++i + ++i + ++i );
}
If any difference then Why it is difference?


4.4 Rating
View Answer
The program that outputs the given binary or image file
3.0 Rating
View Answer
main()
{
char *p;
printf("%d %d ",sizeof(*p),sizeof(p));
}
4.6 Rating
View Answer
#include<conio.h>
main()
{
int x,y=2,z,a;
if(x=y%2) z=2;
a=2;
printf("%d %d ",z,x);
}
3.8 Rating
View Answer

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