Example: Check Whether a Number is Automorphic Number or Not in C using Function

C
C++
C#
Java
Python
PHP

// Check Whether a Number is Automorphic Number or Not in C using Function
#include <stdio.h>

int isAutomorphic(int x);

// It's the driver function
int main() {
    int x;
    // x - denotes the input number to check

    printf("-----Enter an input number to check, It's an automorphic-----\n");
    scanf("%d", &x);
    
    //checking condition
    if (isAutomorphic(x)) {
    	printf("\nThis is an automorphic number\n");
    } else {
    	printf("\nThis is not an automorphic number\n");
    }
    return 0;
}

// This function will check number itself
int isAutomorphic(int x) {
    int sq = x * x;
    // sq - denotes the square
    
    while (x > 0) {
        if (x % 10 != sq % 10)
            return 0;
        
        // Reduce N and square
        x = x / 10;
        sq = sq / 10;
    }
    return 1;
}