C Program to Increment All Elements of an Array by One

Write a C program to increment all elements of an array by one using for loop. In this C example, we incremented each array element by one within the for loop that iterates array items.

#include <stdio.h>

int main()
{
	int Size, i;

	printf("Please Enter the Array size = ");
	scanf("%d", &Size);

	int arr[Size];

	printf("Enter the Array %d elements : ", Size);
	for (i = 0; i < Size; i++)
	{
		scanf("%d", &arr[i]);
	}

	for (i = 0; i < Size; i++)
	{
		arr[i] = arr[i] + 1;
	}

	printf("\nThe Final Array After Incremented by One = ");
	for (i = 0; i < Size; i++)
	{
		printf("%d  ", arr[i]);
	}
	printf("\n");
}

We incremented the array element in this C example while assigning the value and removed the extra for loop.

#include <stdio.h>

int main()
{
	int Size, i;

	printf("Please Enter the Array size = ");
	scanf("%d", &Size);

	int arr[Size];

	printf("Enter the Array %d elements : ", Size);
	for (i = 0; i < Size; i++)
	{
		scanf("%d", &arr[i]);
		arr[i] = arr[i] + 1;
	}

	printf("\nThe Final Array After Incremented by One = ");
	for (i = 0; i < Size; i++)
	{
		printf("%d  ", arr[i]);
	}
	printf("\n");
}

Please Enter the Array size = 8
Enter the Array 8 elements : 10 20 30 40 50 60 70 80

The Final Array After Incremented by One = 11  21  31  41  51  61  71  81  

C program to increment all elements of an array by one using a while loop.

#include <stdio.h>

int main()
{
	int Size, i;

	printf("Please Enter the Array size = ");
	scanf("%d", &Size);

	int arr[Size];

	printf("Enter the Array %d elements : ", Size);
	i = 0;
	while (i < Size)
	{
		scanf("%d", &arr[i]);
		arr[i] = arr[i] + 1;
		i++;
	}

	printf("\nThe Final Array After Incremented by One =  ");
	i = 0;
	while (i < Size)
	{
		printf("%d  ", arr[i]);
		i++;
	}
	printf("\n");
}

Please Enter the Array size = 5
Enter the Array 5 elements : 12 22 44 66 77

The Final Array After Incremented by One =  13  23  45  67  78