What is the output of printf("%d", 5/2); in C?
%
%
Anonymous Quiz
45%
A. 2.5
47%
B. 2
7%
C. 2.0
2%
D. 4
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How is a single-line comment written in C?
Anonymous Quiz
64%
A. // Comment
27%
B. /* Comment */
4%
C. -- Comment
6%
D. # Comment
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Which individual is often referred to as the "father of C" programming language?
Anonymous Quiz
79%
a) Dennis Ritchie
7%
b) Ken Thompson
8%
c) Bjarne Stroustrup
6%
d) James Gosling
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#include <stdio.h>
int main() {
int x = 5;
printf("%d", x++);
return 0;
}
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Which keyword is used to define a constant in C?
Anonymous Quiz
67%
a) const
6%
b) final
13%
c) define
13%
d) constant
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#include <stdio.h>
int main() {
int x = 10;
int *ptr = &x;
*ptr = 20;
printf("%d\n", x);
return 0;
}
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Output of above code?
Anonymous Quiz
33%
A) 10
14%
B) Undefined Behavior
43%
C) 20
10%
D) Compilation Error
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Printing Hello World
#include <iostream>
int main() {
std::cout << "Hello World";
return 0;
}
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Program to swap values of two variables.
#include <iostream>
int main() {
int a=1;
int b=2;
int temp;
std::cout << "Before Swapping:\n";
std::cout << "a=" << a <<",b=" << b <<"\n";
temp = a;
a=b;
b=temp;
std::cout << "After Swapping:\n";
std::cout << "a=" << a <<",b=" << b <<"\n";
return 0;
}
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Program to convert temperature from Fahrenheit to Celsius.
#include <iostream>
using namespace std;
int main() {
double fahrenheitTemperature;
double temperatureInCelsius;
cout << "Enter your temperature in Fahrenheit:";
cin >> fahrenheitTemperature;
temperatureInCelsius = ((fahrenheitTemperature - 32) * 5) / 9;
cout << "Temperature in celsius : " << temperatureInCelsius;
return 0;
}
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Program to calculate area of circle.
#include <iostream>
#include <cmath>
using namespace std;
int main() {
double radius;
double area;
const double PI = 3.14;
cout << "Enter the radius of the circle: ";
cin >> radius;
area = PI * pow(radius,2);
cout << "Area of circle: "<< area;
return 0;
}
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Program for rolling dice.
#include <iostream>
#include <cstdlib>
#include <ctime>
using namespace std;
int main() {
int result;
const short maxValue = 6;
const short minValue = 1;
srand(time(nullptr));
result = (rand() % (maxValue - minValue + 1)) + minValue;
cout << result;
return 0;
}
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Program: Swap two numbers without using a third variable.
#include <iostream>
using namespace std;
int main() {
int a, b;
cout << "Enter two numbers: ";
cin >> a >> b;
a = a + b;
b = a - b;
a = a - b;
cout << "After swapping: " << a << " " << b << endl;
return 0;
}
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Program: Check if a number is even or odd using the modulus operator.
#include <iostream>
using namespace std;
int main() {
int num;
cout << "Enter a number: ";
cin >> num;
if (num % 2 == 0)
cout << num << " is Even." << endl;
else
cout << num << " is Odd." << endl;
return 0;
}
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Program: Find the largest of three numbers using if-else.
#include <iostream>
using namespace std;
int main() {
int a, b, c;
cout << "Enter three numbers: ";
cin >> a >> b >> c;
if (a >= b && a >= c)
cout << "Largest number is: " << a << endl;
else if (b >= a && b >= c)
cout << "Largest number is: " << b << endl;
else
cout << "Largest number is: " << c << endl;
return 0;
}
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Program: Check if a given year is a leap year.
#include <iostream>
using namespace std;
int main() {
int year;
cout << "Enter a year: ";
cin >> year;
if ((year % 4 == 0 && year % 100 != 0) || (year % 400 == 0))
cout << year << " is a Leap Year." << endl;
else
cout << year << " is not a Leap Year." << endl;
return 0;
}
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Program: Implement a calculator using a switch case.
#include <iostream>
using namespace std;
int main() {
char op;
double num1, num2;
cout << "Enter an operator (+, -, *, /): ";
cin >> op;
cout << "Enter two numbers: ";
cin >> num1 >> num2;
switch (op) {
case '+': cout << "Result: " << num1 + num2 << endl; break;
case '-': cout << "Result: " << num1 - num2 << endl; break;
case '*': cout << "Result: " << num1 * num2 << endl; break;
case '/':
if (num2 != 0)
cout << "Result: " << num1 / num2 << endl;
else
cout << "Error! Division by zero." << endl;
break;
default: cout << "Invalid operator!" << endl;
}
return 0;
}
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Program : To calculate factorial of a given number
cpp
#include <iostream>
using namespace std;
int main() {
int num,res=1;
cout << "Enter a positive number:" << endl;
cin >> num;
if(num < 0){
cout << "You entered a negative number" << endl;
}
else if(num == 0){
cout << "0! = " << "1";
}
else{
for(int i = 1;i <= num;i++){
res = res * i;
}
cout << "Factorial of " << num << " is "<<res;
}
return 0;
}
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