{"id":583,"date":"2024-10-10T13:44:02","date_gmt":"2024-10-10T08:14:02","guid":{"rendered":"https:\/\/codexplained.in\/?p=583"},"modified":"2025-11-24T15:55:46","modified_gmt":"2025-11-24T10:25:46","slug":"find-the-sum-of-array-elements","status":"publish","type":"post","link":"https:\/\/codexplained.in\/?p=583","title":{"rendered":"Find the Sum of Array Elements"},"content":{"rendered":"
\n#include <stdio.h>\n\nint main() {\n    int n, i; \/\/ Declare variables for the number of elements and a loop counter\n    int sum = 0; \/\/ Variable to hold the sum of the array elements\n\n    \/\/ Ask the user for the number of elements in the array\n    printf("Enter the number of elements in the array: ");\n    scanf("%d", &n);\n\n    int array[n]; \/\/ Declare an array of size n\n\n    \/\/ Prompt the user to enter the array elements\n    printf("Enter the elements of the array:\\n");\n    for (i = 0; i < n; i++) {\n        printf("Element %d: ", i + 1);\n        scanf("%d", &array[i]); \/\/ Read each element into the array\n    }\n\n    \/\/ Calculate the sum of the elements in the array\n    for (i = 0; i < n; i++) {\n        sum += array[i]; \/\/ Add each element to the sum\n    }\n\n    \/\/ Display the total sum\n    printf("The sum of the array elements is: %d\\n", sum);\n\n    return 0; \/\/ End of the program\n}\n\n<\/pre><\/div>\n\n\n
Explanation of the Program<\/h3>\n\n\n\n
    \n
  1. Include the Standard Library<\/strong>:\n
      \n
    • The line #include <stdio.h><\/code> includes the standard input-output library, which allows the use of functions like printf<\/code> and scanf<\/code>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
    • Variable Declarations<\/strong>:\n
        \n
      • int n, i;<\/code>: Here, n<\/code> will store the number of elements the user wants in the array, and i<\/code> is used as a loop counter.<\/li>\n\n\n\n
      • int sum = 0;<\/code>: This initializes the sum<\/code> variable to zero. It will hold the total of the array elements as we calculate it.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
      • User Input for Array Size<\/strong>:\n
          \n
        • The program prompts the user to enter the number of elements in the array with the line:cCopy codeprintf(\"Enter the number of elements in the array: \");<\/code><\/li>\n\n\n\n
        • The input is read using scanf(\"%d\", &n);<\/code>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
        • Array Declaration<\/strong>:\n
            \n
          • int array[n];<\/code>: This declares an array of integers with a size specified by the user.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
          • Input Elements into the Array<\/strong>:\n
              \n
            • The program uses a for<\/code> loop to prompt the user to enter each element of the array:cCopy codefor (i = 0; i < n; i++) { printf(\"Element %d: \", i + 1); scanf(\"%d\", &array[i]); }<\/code><\/li>\n\n\n\n
            • The loop runs from 0<\/code> to n-1<\/code>, and each element is read and stored in the array.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
            • Calculating the Sum<\/strong>:\n
                \n
              • Another for<\/code> loop calculates the sum of the elements:cCopy codefor (i = 0; i < n; i++) { sum += array[i]; }<\/code><\/li>\n\n\n\n
              • In each iteration, the current element of the array is added to the sum<\/code>.<\/li>\n<\/ul>\n<\/li>\n\n\n\n
              • Display the Result<\/strong>:\n
                  \n
                • Finally, the program prints the total sum of the elements:cCopy codeprintf(\"The sum of the array elements is: %d\\n\", sum);<\/code><\/li>\n<\/ul>\n<\/li>\n\n\n\n
                • Program End<\/strong>:\n
                    \n
                  • The program returns 0<\/code>, indicating successful completion.<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n\n\n\n
                    Example Output<\/h3>\n\n\n\n
                    Here\u2019s how the program would interact with a user:<\/p>\n\n\n\n
                    User Input:<\/strong><\/p>\n\n\n\n
                    Enter the number of elements in the array: 5\nEnter the elements of the array:\nElement 1: 10\nElement 2: 20\nElement 3: 30\nElement 4: 40\nElement 5: 50<\/code>\n\n<\/code>output:<\/strong>\nThe sum of the array elements is: 150<\/code><\/pre>\n