Example: C Program to Check Whether a Number is Integer or Not using While loop

C
C++
C#
Java
Python
PHP

// C Program to Check Whether a Number is Integer or Not using While loop
#include <stdio.h>

int main() {
    char random_number[100];
    int f = 0, i = 0;

    printf("Enter the number to check itself: ");
    scanf("%s", random_number);

    while (random_number[i++] != '\0') {
        if (random_number[i] == '.') {
            f = 1;
            break;
        }
    }

    if (f)
        printf("\n%s is a floating-point number.\n", random_number);
    else
        printf("\n%s is an integer number.\n", random_number);
    return 0;
}