Skip to main content

C Interview Questions And Answers - Part 4.

What is the output of following c program?
#include<stdio.h>
int main() {

int goto=5;
printf("%d",goto);
return 0;
}

Output: Compilation error. 
Because it declared an invalid variable name. goto is a keyword in c language and variable name cannot be any keyword.

What is the output of following c program?
#include<stdio.h>
int main() {

long int 1a=5l;
printf("%ld",1a);
return 0;
}

Output: Compilation error.
Because variable name cannot start with numeric value.

What is the output of following c program?
#include<stdio.h>
int main() {

int max-val=100;
int min-val=10;
int avg-val;
avg-val = max-val + min-val / 2;

printf("%d",avg-val);
return 0;
}

Output: Compilation error.
Because variable name cannot have special character except underscore ( _ ).

What is the output of following c program?
#include<stdio.h>
int xyz=10;
int main() {

int xyz=20;
printf("%d",xyz);
return 0;
}

Output: 20
Because two variables can have same name in different scope.

What is the output of following c program?
#include<stdio.h>
int main() {

int ABC=10;
printf("%d",abc);
return 0;
}

Output: Compilation error.
Because variable name is case sensitive.

What is the output of following c program?
#include<stdio.h>
int main() {

int xyz=20;
int xyz;
printf("%d",xyz);
return 0;
}

Output: Compilation error.
Because two local variables cannot have same name in same scope.

What is the output of following c program?
#include<stdio.h>
void main() {

char *str="CQUESTIONBANK";
printf(str+9);
getch();
}
Output: BANK

What is the output of following c program?
#include<stdio.h>
extern struct student {

int a;
int b;
int c;
int d;
}s={6,7,8,9};

void main() {
printf("%d %d %d %d",s.a,s.b,s.c,s.d);
getch();
}
Output: 6 7 8 9

What is the output of following c program?
#include<stdio.h>

struct student {
int roll;
int cgpa;
int sgpa[8];
};

void main() {
struct student s={12,8,7,2,5,9};
int *ptr;

ptr=(int *)&s;
printf("%d",*(ptr+3));
getch();
}
Output: 2

What is the output of following c program?
#include<stdio.h>

struct game {
int level;
int score;

struct player {
char *name;
}g2;
}g1;

void main() {
printf("%d  %d  %s",g1.level,g1.score,g1.g2.name);
getch();
}
Output: 0 0 (null)
Labels:

Popular posts from this blog

Screenshots from Windows 1.01

Windows 1.0 is a graphical personal computer operating environment developed by Microsoft, released on November 20, 1985, as the first version of the Microsoft Windows line. Version 1.01 , also released in 1985, was the first point-release after Windows 1.00.   Screenshots from Windows 1.01: ⇰ Desktop  First Run Empty Desktop Desktop With Applications ⇰  Office Applications Notepad Text Editor Calculator Calendar Clock Address Book ⇰  Multimedia Applications Media player, CD player, Volume level, and Sound: This GUI doesn’t have these features. ⇰  Networking Applications Terminal Phone Dialer: This GUI doesn’t have this feature. ⇰  Internet Applications Browser, and Mail: This GUI doesn’t have these features. ⇰  Accessibility Applications Keyboard Map:  This GUI doesn’t have this feature. ⇰  Settings Desktop themes,  Display,  S...
Read more

C Program To Check Whether A Number Is Palindrome Or Not.

This program takes an integer from user and the integer is reversed. If the reversed integer is equal to the integer entered by user then that number is a palindrome. If not that number is not a palindrome.   #include <stdio.h> int main()  { int num, temp, remainder, reverse = 0; printf("Enter an integer: "); scanf("%d", &num); /*  original number is stored at temp */ temp = num; while (num > 0)  { remainder = num % 10; reverse = reverse * 10 + remainder; num /= 10;   }
Read more

C++ Program To Implement Casino Number Guessing Game.

#include <iostream> #include <string> #include <cstdlib> #include <ctime> using namespace std; void drawLine(int n, char symbol); void rules(); int main() { string playerName; int amount; int bettingAmount; int guess; int dice; char choice; srand(time(0)); drawLine(70,'_'); cout << "\n\n\n\t\tCASINO GAME\n\n\n\n"; drawLine(70,'_'); cout << "\n\nEnter Your Name : "; getline(cin, playerName); cout << "\n\nEnter Deposit Amount To Play Game : $"; cin >> amount;
Read more

C Program To Convert Natural Numbers To Roman Numerals.

Roman Number System of representing numbers devised by the ancient Romans. The numbers are formed by combinations of the symbols I, V, X, L, C, D, and M, standing, respectively, for 1, 5, 10, 50, 100, 500, and 1,000 in the Hindu-Arabic numeral system. Natural numbers mean no negative numbers and no fractions, i.e. the whole numbers from 1 upwards: 1, 2, 3, and so on. Here is source code of the C program to convert natural numbers to Roman Numerals. It compiles and runs on any operating system. #include <stdio.h> void predigit(char num1, char num2); void postdigit(char c, int n); char romanval[1000]; int i = 0; int main() { int j; long number; printf("Enter any natural number: "); scanf("%d", &number);
Read more