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C++ Program to Perform Linear Search on a Vector

  C++ Program to Perform Linear Search on a Vector Introduction In this C++ program, we will learn how to perform a Linear Search on a vector. The program first takes the size of the vector and its elements as input. Then it asks the user for the element to search. If the element is found, it displays the index where it is located. Otherwise, it displays a message indicating that the element is not found. C++ Program #include<bits/stdc++.h> using namespace std; int main() { int num, search, found = 0; cout << "Enter the size of the vector:" << endl; cin >> num; vector<int> v(num); cout << "Enter " << num << " elements in vector:" << endl; for(int i = 0; i < num; i++) { cin >> v[i]; } cout << "Enter element that you want to search:" << endl; cin >> search; for(int i = 0; i < num; i++) { ...
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Print Prime Numbers up to a Limit in C

Prime Numbers from 1 to N in C

✅ C Program to Print Prime Numbers from 1 to N

#include <stdio.h>

int main() {
    int n, i, j, count;

    printf("Enter the ending value: ");
    scanf("%d", &n);

    printf("Prime numbers from 1 to %d are:\n", n);
    for(i = 2; i <= n; i++) {
        count = 0;
        for(j = 1; j <= i; j++) {
            if(i % j == 0) {
                count++;
            }
        }
        if(count == 2) {
            printf("%d ", i);
        }
    }

    return 0;
}

🧠 Explanation:

  • The program takes user input n and prints all prime numbers from 1 to n.
  • It checks each number i from 2 to n.
  • For each i, it counts how many numbers divide it (using variable count).
  • If a number has exactly 2 factors (1 and itself), it is prime and printed.

🖥️ Sample Output:

Enter the ending value: 15
Prime numbers from 1 to 15 are:
2 3 5 7 11 13

🔑 Keywords:

Prime number program in C, C program using nested loops, check prime in C, number logic programs, beginner-friendly C program, coding interview logic

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