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C Programming Exercises

C Exercises: Check whether the sequence of numbers 1, 2, 3 appears in a given array of integers somewhere

C-programming basic algorithm: Exercise-14 with Solution

Write a C program to check whether the sequence of numbers 1, 2, 3 appears in a given array of integers somewhere.

C Code:

#include <stdio.h>
#include <stdlib.h>
int main(void){
    int arr_size;
    int array1[] = {1,1,2,3,1};
    arr_size = sizeof(array1)/sizeof(array1[0]);
    printf("%d",test(array1, arr_size));
    int array2[] = {1,1,2,4,1};
    arr_size = sizeof(array2)/sizeof(array2[0]);
    printf("\n%d",test(array2, arr_size));
    int array3[] = {1,2,2,1,2,3};
    arr_size = sizeof(array3)/sizeof(array3[0]);
    printf("\n%d",test(array3, arr_size));
    }       
  int test(int nums[], int arr_size)
         {
            for (int i = 0; i < arr_size-1; i++)
            {
                if (nums[i] == 1 && nums[i + 1] == 2 && nums[i + 2] == 3)
                    return 1;
            }
           return 0;
        }

Sample Output:

1
0
1

Pictorial Presentation:

C Programming Algorithm: Check whether the sequence of numbers 1, 2, 3 appears in a given array of integers somewhere

Flowchart:

C Programming Algorithm Flowchart: Check whether the sequence of numbers 1, 2, 3 appears in a given array of integers somewhere

Solution

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Next: Write a C program to count the number of two 5's are next to each other in an array of integers. Also count the situation where the second 5 is actually a 6.



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