Happy Codings - Programming Code Examples

C Programming Code Examples

C > For Loops and While Loops Code Examples

Program to Read Input Until User Enters a Positive Integer



Program to Read Input Until User Enters a Positive Integer

The positive numbers 1, 2, 3... are known as natural numbers. The programs below takes a positive integer (let say n) as an input from the user and calculates the sum up to n.

#include <stdio.h>
int main()
{
    int n, j, sum = 0;

    do {
        printf("Enter a positive integer: ");
        scanf("%d",&n);
    }
    while (n <= 0);

    for(j=1; j <= n; ++j)
    {
        sum += j;   // sum = sum+j;
    }

    printf("Sum = %d",sum);

    return 0;
}

Code Finds the Sum of 2 Binary Numbers
Take two Binary Numbers as input. Add each bits from the two binary numbers separately starting from LSB. The operations may be as follows. a) (0+0)=0, b) (1+0)=1, c) (1+1)=0 and

C Program to Find Smallest array element
Finding smallest value in an Array is a classic C array program. C code gives you an insight of iteration, array and conditional operators. We iteratively check each element of array...

C Code to Illustrate the Concept of Unions
C Define the union named number with two variables j1 and j2. Define the union variable x. Take the value of two variables using dot operator(i.e. x.j1, x.j2) as input. Print values

C++ Programming Subtract Two Matrices
Program ask to the user to enter any two 3*3 array elements to subtract them i.e., Matrix1 - Matrix2, then display the "subtracted" result of the two matrices ( Matrix3 ) on the screen:

Print Strong Numbers between an interval
First give a meaningful name to our function, say "printStrongNumbers()". Along with this we must define function to find factorial of a number, say long long fact(int x);. Next we...

C++ language Implements the Hill Cypher
Program to implement hill cipher. In classical cryptography, the Hill cipher is a polygraphic substitution cipher based on 'Linear Algebra'. Following discussion assumes an elementary

Code Calculate Score Intersecting Ngrams
C Get ngrams for first word. Get ngrams for second word. Compare two arrays, count duplicates. Calculate score. Clean up. Return array of ngrams. Padd word according to one

Program Prints Natural Numbers in Range
Using above logic you can easily find a way to print natural numbers in range. If not here is a hint. Input start limit from user and store it in some variable say start. Input end limit from