Insert elements into array using C language

We can insert elements at any position, which means we can insert at the beginning, middle, last or anywhere in the array.

After inserting an element into the array, the position or index position increases, but it does not mean that the size of the array increases.

The logic of inserting elements is−

• Input the size of the array

• Input the element to be inserted position

• Next enter the number you want to insert at that position

for(i=size-1;i>=pos-1;i--)
   student[i+1]=student[i];
   student[pos-1]= value;

The final array should be printed using a for loop.

Program

Live demonstration

#include<stdio.h>
int main(){
   int student[40],pos,i,size,value;
   printf("enter no of elements in array of students:");
   scanf("%d",&size);
   printf("enter %d elements are:</p><p>",size);
   for(i=0;i<size;i++)
      scanf("%d",&student[i]);
   printf("enter the position where you want to insert the element:");
   scanf("%d",&pos);
   printf("enter the value into that poition:");
   scanf("%d",&value);
   for(i=size-1;i>=pos-1;i--)
      student[i+1]=student[i];
   student[pos-1]= value;
   printf("final array after inserting the value is</p><p>");
   for(i=0;i<=size;i++)
      printf("%d</p><p>",student[i]);
   return 0;
}

Output

enter no of elements in array of students:6
enter 6 elements are:
12
23
34
45
56
67
enter the position where you want to insert the element:3
enter the value into that poition:48
final array after inserting the value is
12
23
48
34
45
56
67

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