C program to replace an element in an array with its position

In these example we will learn how to replace or insert new element in an array. 

Ex: Write a C program to replace an element in an array with its position, How to write a C program to replace an element from array, C program to insert and replace element from array.

  Program to replace an element in an array with its position:

#include<stdio.h>

void main()

{

 //Declare array of size 100

 int a[100];

 int i,num,key,pos;

 

 printf("Enter how many elements you want to insert:\n");

 scanf("%d",&key);

 

 

 printf("Enter the elements: \n");

 for(i=0;i<key;i++)

 scanf("%d",&a[i]);

 

 

 printf("Elements in array are:\n");

 for(i=0;i<key;i++)

 printf("%d ",a[i]);

 

 

 printf("\n\nEnter which new element you want to insert: \n");

 scanf("%d",&num);

 

 //Accept position to insert new element

 printf("\nEnter the position to insert new element: \n");

 scanf("%d",&pos);

 

 

 for(i=0;i<key;i++)

 {

  if(i+1==pos)

  {

   a[pos-1]=num;

  }

 }

 

 //Print Output

 printf("Final Output: \n");

 for(i=0;i<key;i++)

 printf("%d ",a[i]);

 

}

Above program will show the following Output:

Enter how many elements you want to insert: 5

Enter the elements:

1

2

3

6

5

Elements in array are:

1 2 3 6 5

Enter which new element you want to insert: 4

Enter the position to insert new element: 4

Final Output: 

1 2 3 4 5

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