C program to print all the numbers in a char array.

printNumbers.c

#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>


int main() {

    char sentence[100];

    int numberOfNumbers = 0;

    printf("\n\n");

    printf("Enter a sentence: ");
    fgets(sentence, 100, stdin);

    for(int i = 0; sentence[i] != '\0'; i++) {

        if (isdigit(sentence[i]) != 0) {

            numberOfNumbers++;
            printf("%c\n",sentence[i]);

        }

    }

    printf("\n");

    if (numberOfNumbers == 0) {

        printf("There isn't any number at the sentence.\n");

    }

    printf("\n");

    return 0;

}