C PROGRAMMING PROGRAM • ARRAYS, SEARCHING & SORTING
Delete an Element from an Array
Learn how to delete an element from an array using a clear C program.
PROBLEM UNDERSTANDING
Input and expected output
Sample input
5 10 20 30 40 50 3
Sample output
10 20 40 50
COMPLETE C PROGRAM
Complete C implementation
#include <stdio.h>
int main(void)
{
int size, values[100], position;
printf("Enter array size: ");
scanf("%d", &size);
if (size < 1 || size > 100) return 1;
for (int index = 0; index < size; index++) scanf("%d", &values[index]);
printf("Enter position to delete (1 to %d): ", size);
scanf("%d", &position);
if (position < 1 || position > size) return 1;
for (int index = position - 1; index < size - 1; index++) values[index] = values[index + 1];
size--;
for (int index = 0; index < size; index++) printf("%d%c", values[index], index == size - 1 ? '\n' : ' ');
return 0;
}CURRENT STEP
SELECTED LINE
EXPECTED OUTPUT FOR THE SAMPLE
10 20 40 50
Step 0 of 0
PROGRAM EXPLANATION
Algorithm and explanation
- Read the required input values.
- Overwrite the deleted position by shifting all later elements one place left.
- Display the computed result.
Overwrite the deleted position by shifting all later elements one place left.
EFFICIENCY
Time and space complexity
Time complexity
O(n)
Auxiliary space
O(n)
DEBUGGING CHECKLIST
Common mistakes
Check this
Use the correct format specifier for every variable.
Check this
Initialize variables before using their values.
Check this
Check braces, semicolons and input order carefully.
Try it yourself
Practice: Run the program with the sample input, predict its output, and then test one boundary case of your own.
