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C Program to find the sum of all elements in a matrix
Learn how to calculate the sum of every element in a C matrix using a two-dimensional array, nested loops, and a safe accumulator.
Sep 20, 2026Read latest
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C Program
C Program to print only even numbers from an array
Learn how to print only the even numbers stored in a C array using the modulo operator, with validated code, examples, a dry run, and complexity analysis.
C Program
C Program to print only odd numbers from an array
Learn how to print only the odd numbers stored in a C array using the modulo operator, with validated code, examples, a dry run, and complexity analysis.
C Program
C Program to find the sum of all even numbers in an array
Learn how to find the sum of all even numbers stored in a C array using the modulo operator, with validated code, examples, and a dry run.
C Program
C Program to find the sum of all odd numbers in an array
Learn how to find the sum of all odd numbers stored in a C array using the modulo operator, with validated code, examples, and a dry run.
C Program
C Program to find the index of a given number in an array
Learn how to find the zero-based index of a given number in a C array using linear search, with validated code, examples, and a dry run.
C Program
C Program to swap the first and last elements of an array
Learn how to swap the first and last elements of a C array using a temporary variable, with validated code, examples, edge cases, and complexity.
C Program
C Program to count how many times a given number occurs in an array
Learn how to count the occurrences of a given number in a C array using one traversal, with validated code, examples, a dry run, and complexity analysis.
C Program
C Program to find the first duplicate element in an array
Learn how to find the first array element that appears again later in C, with validated code, examples, a dry run, edge cases, and complexity analysis.
C Program
C Program to find the first non-repeating element in an array
Learn how to find the first array element that occurs exactly once in C, with validated code, examples, a dry run, edge cases, and complexity analysis.
C Program
C Program to find the second smallest element in an array
Learn how to find the second-smallest distinct element in a C array using one traversal, with validated code, duplicate handling, and a dry run.