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c interview questions

COMMONLY ASKED QUESTIONS IN INTERVIEW



1. In the following declaration statement

char c=�A�;

Variable c stores one byte of memory space while character constants �A� stores one byte memory space. How one byte variables can stores two byte character constant?
2. What is automatic type promotion in c?

3. Swap two variables without using third variable.

4. Write a c program

What is function in C programming?

Definition of function:



Function is block or part of program. When any program is very long or same code is repeating many times then we try to cut the program in different parts (or blocks) so that whole program became more understandable, easier to debug (error checking) and size of code will be lesser.



Syntax of function in c programming





Simple example of function

Mock test of c programming with answer

Mock test of c
programming with answer





1. Point out error, if any, in the
following program



int main(){

int i=1;

switch(i){

case 1:

printf("\nRadioactive cats have 18
half-lives");

break;

case 1*2+4:

printf("\nBottle for rent -inquire
within");

break;

}

}



Answer: No error.



Constant expression like
1*2+4 is acceptable in cases of a switch.



2. Point out the
error, if any

Placement questions of C

question of c programming with solution1. Point out error, if any, in the following programmain(){int i=1;switch(i){case 1:printf("\nRadioactivecats have 18 half-lives");break;case 1*2+4:printf("\nBottle forrent -inquire within");break;}}Ans. Noerror. Constant expression like 1*2+4 are acceptablein cases of a switch.2. Point out the error, if any, in the following programmain(){int a=10,b;a>= 5

C placement paper

C new placement papers questions and answers. It is model or sample test questions and answers in c programming language





(1) What will be output of the following program ?


void main()

{ int i;

clrscr();

printf("india"-'A'+'B');



getch();

}


(2)What will be output of the following program ?


void main()

void main()

{ int i;

clrscr();

printf(5+"Raja hindustani");



getch();

}

c programming interview question with solution

(1)void main(){int i='-'-'-';int a;clrscr();a=sizeof(i++,++i,1.1);printf(" a= %d i= %d",a,i);getch();}output : a=0 a=8(2)void main(){unsigned int i=-1;int j=-1;float b,c;clrscr();b=i+5.5;c=j+5.5;printf("%.0f %.0e\n",b,c);printf("%u\n",i*-1);printf("%u\n",-i*-1);getch();}output: 65540 4e+00165535(3)void main(){unsigned char a=-13;int b;clrscr();b=~(a^a);printf("%x %X\n",b);getch();}output:ffff