C Foundation

What is C? C Compiler Installation C Extensions C Compiler C Interpreter C Program Structure

C Basics

C Keywords C Data Types C Identifiers C Variables C Constant C Escape Sequences C Constant and Volatile C Typecast

Operators

What is Operator C Comma Operator C Arithmetic Operators C Relational Operators C Logical Operators C Bitwise Operators C Conditional Operators C : : Operator C Operator Priority

Basic IO's

Basic IO's C Formatted Functions C Unformatted Functions C Common Functions

Control Statements

What is Control Statement C if Statement C if else Statement C Nested if Statement C Else if Statement C Break Statement C Continue Statement C Switch Statement C Goto Statement

Looping

What is Control Loop C for Loop C Nested for Loop C while Loop C Nested while Loop C do while Loop C Nested do while loop

Functions

What is Function C User Defined Functions C Recursion C Passing Parameters

Scope

Scope C Local Scope C Global Scope

Storage Classes

What is Storage Class C Auto C Extern C Static C Register

Array

What is Array C One Dimensional Array C Two Dimensional Array C Multi Dimensional Array C Arrays Of Strings

String

What is String C String Functions

Pointer

What is Pointer C Pointers Arithmetic C Pointer to Pointer C Pointers and Arrays C Pointers and Strings C Pointer to Functions Void Pointers Null Pointers C Null and Void Pointer

Structure

What is Structure C Struct within Struct C Array within Structure C Pointer to Structure C Structure and Function C Enum C Bitfield Structure C Type def

Union

What is Union

Files

What is File C read a file C write a file C File Handling C Error Handling C Low Level Disk I/O C Other file functions

Memory Allocation

What is Memory Allocation C Malloc() C Calloc() C Free() C Realloc() C Coreleft()

C Reference

All ASCII Code Basic C Questions

C Interview

C Interview Sets All Star Patterns All Number Patterns All Alphabet Patterns All Series Patterns
The ones who are crazy enough to think they can change the world are the ones who do.
- Steve Jobs

Intersection of Array

Intersection of Array

Here your task is to ask user to enter any elements in a set of array and you have to extract the common elements among the set. For example lets us consider an array a[2, 4, 6, 8] and b[2, 5, 7, 11]. Then common element is 2

C Program - Intersection of Array

Let us write a c program to find intersecting elements from 2 arrays.

c-intersection-array.c
#include <stdio.h>
int main()
{
int a[10], b[10], flag = 0, n1, n2, i, j;
printf("Enter array1 size : ");
scanf("%d",&n1);
printf("\nEnter array2 size : ");
scanf("%d",&n2);
printf("\nEnter array1 element : ");
for(i = 0;i < n1;i++)
scanf("%d",&a[i]);
printf("\nEnter array2 element : ");
for(i = 0;i < n2;i++)
scanf("%d",&b[i]);
printf("Intersection: ");
for(i = 0;i < n1;i++)
{
for(j = 0;j < n2;j++)
{
if(b[i] == a[j])
{
flag = 1;
}
}
if(flag == 1)
{
printf("%d ", b[i]);
}
flag = 0;
}
return 0;
}
Enter array1 size : 5
Enter array2 size : 3
Enter array1 element : 1 2 3 4 5
Enter array2 element : 1 2 6
Intersection: 1, 2

Note:

Here we have two arrays, we compare every individual elements of one array(b[]) to elements in another array(a[]), if any of the element matches we raise the flag = 1 and print that particular element. This process is repeated until it reaches the last element in an array(b[]).

Report Us

We may make mistakes(spelling, program bug, typing mistake and etc.), So we have this container to collect mistakes. We highly respect your findings.

Report

We to update you