21. Write a program to remove duplicate characters from a string.
Required Input:
std::string str = "programming";Expected Output:
String after removing duplicates: progamin
Code In Cpp
#include
#include
#include
int main() {
std::string str = "programming";
// Logic to remove duplicates
return 0;
}
Output
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22. Implement a program to find the longest word in a sentence.
Required Input:
std::string sentence = "Find the longest word in this sentence";Expected Output:
Longest word = sentence
Code In Cpp
#include
#include
#include
int main() {
std::string sentence = "Find the longest word in this sentence";
// Logic to find the longest word
return 0;
}
Output
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23. Write a program to check if a number is Armstrong or not.
Required Input:
int n = 153;Expected Output:
153 is an Armstrong number.
Code In Cpp
#include
#include
int main() {
int n = 153;
// Logic to check Armstrong number
return 0;
}
Output
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24. Implement a program to convert a binary number to decimal.
Required Input:
int binary = 1011;Expected Output:
Decimal = 11
Code In Cpp
#include
int main() {
int binary = 1011;
// Logic to convert binary to decimal
return 0;
}
Output
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25. Write a program to check if a number is a perfect number.
Required Input:
int n = 28;Expected Output:
28 is a perfect number.
Code In Cpp
#include
int main() {
int n = 28;
// Logic to check perfect number
return 0;
}
Output
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26. Write a program to implement a bubble sort algorithm on an array.
Required Input:
int arr[] = {64, 34, 25, 12, 22, 11, 90};Expected Output:
Sorted array: 11 12 22 25 34 64 90
Code In Cpp
#include
int main() {
int arr[] = {64, 34, 25, 12, 22, 11, 90};
// Logic to implement bubble sort
return 0;
}
Output
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27. Write a program to calculate the sum of elements in an array.
Required Input:
int arr[] = {1, 2, 3, 4, 5};Expected Output:
Sum of elements: 15
Code In Cpp
#include
int main() {
int arr[] = {1, 2, 3, 4, 5};
// Logic to calculate the sum of elements
return 0;
}
Output
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28. Implement a program to perform a linear search on an array.
Required Input:
int arr[] = {2, 4, 6, 8, 10}; and int key = 6;Expected Output:
Element found at index: 2
Code In Cpp
#include
int main() {
int arr[] = {2, 4, 6, 8, 10};
int key = 6;
// Logic to perform linear search
return 0;
}
Output
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29. Write a program to implement a basic stack using an array.
Required Input:
Push elements 10, 20, 30, then pop an element.Expected Output:
Popped element: 30
Code In Cpp
#include
#define MAX 100
class Stack {
private:
int arr[MAX];
int top;
public:
Stack();
void push(int x);
int pop();
bool isEmpty();
};
int main() {
// Logic to demonstrate stack operations
return 0;
}
Output
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30. Create a program that uses exception handling to handle division by zero errors.
Required Input:
int a = 10; int b = 0;Expected Output:
Result: Division by zero error.
Code In Cpp
#include
#include
int divide(int a, int b);
int main() {
int a = 10, b = 0;
// Logic to perform division and handle exceptions
return 0;
}
Output
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