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C Programming Exercises

C Exercises: Check a given array of integers and return true if the given array contains two 5's next to each other, or two 5 separated by one element

C-programming basic algorithm: Exercise-61 with Solution

Write a C program to check a given array of integers and return true if the given array contains two 5's next to each other, or two 5 separated by one element.

C Code:

#include <stdio.h>
#include <stdlib.h>
int main(void){
    int arr_size;
    int array1[] = {1, 5, 5, 5, 5};
    arr_size = sizeof(array1)/sizeof(array1[0]);
    printf("%d",test(array1, arr_size));
    int array2[] = { 2, 7, 8, 10};
    arr_size = sizeof(array2)/sizeof(array2[0]);
    printf("\n%d",test(array2, arr_size));
    int array3[] = {3, 3, 3, 5, 7, 5};
    arr_size = sizeof(array3)/sizeof(array3[0]);
    printf("\n%d",test(array3, arr_size));
  }    
  int test(int numbers[], int arr_size)
         {
            int len = arr_size;
            for (int i = 0; i < len - 1; i++)
            {
                if (numbers[i] ==5 && numbers[i + 1] == 5) return 1;
                if (i + 2 < len && numbers[i] == 5 && numbers[i + 2] == 5) return 1;
            }
            return 0;
         }

Sample Output:

1
0
1

Pictorial Presentation:

C Programming Algorithm: Check a given array of integers and return true if the given array contains two 5's next to each other, or two 5 separated by one element

Flowchart:

C Programming Algorithm Flowchart: Check a given array of integers and return true if the given array contains two 5's next to each other, or two 5 separated by one element

Solution

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Next: Write a C program to check a given array of integers and return true if there is a 3 with a 5 somewhere later in the given array.



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