w3resource
C Programming Exercises

C Exercises: Check a given array of integers, length 3 and create a new array

C-programming basic algorithm: Exercise-44 with Solution

Write a C program to check a given array of integers, length 3 and create a new array. If there is a 5 in the given array immediately followed by a 7 then set 7 to 1.

C Code:

#include <stdio.h>
#include <stdlib.h>
int main(void){
    int arr_size;
    int array1[] = {1, 5, 7};
    arr_size = sizeof(array1)/sizeof(array1[0]);
    printf("Elements in original array are: ");  
    print_array(array1, arr_size);   
    for (int i = 0; i < arr_size - 1; i++)
            {
                if (array1[i] == 5 && array1[i + 1] == 7)
                    array1[i + 1] = 1;
            }
    printf("Elements in new array are: ");  
    print_array(array1, arr_size);        
     } 
 print_array(int parray[], int size)
  {
   int i;      
   for( i=0; i<size-1; i++)  
    {  
        printf("%d, ", parray[i]);  
    } 
   printf("%d ", parray[i]);  
   printf("\n");   
  } 

Sample Output:

Elements in original array are: 1, 5, 7 
Elements in new array are: 1, 5, 1

Pictorial Presentation:

C Programming Algorithm: check a given array of integers, length 3 and create a new array

Flowchart:

C Programming Algorithm Flowchart: check a given array of integers, length 3 and create a new array

Solution

Contribute your code and comments through Disqus.

Previous: Write a C program to check a given array of integers and return true if the array conains 10 or 20 twice.The length of the array will be 0, 1, or 2.
Next: Write a C program to compute the sum of the two given arrays  of integers, length 3 and find the array which has the largest sum.