#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
 
#define SIZE 20
 
int main()
{
    int i = 0;
    char palavra[SIZE];
    char palavra2[SIZE];
    char temp;
 
    printf("Insert the string\n");
    scanf("%s", palavra);
 
    do{
        if (isdigit(palavra[i])){
            temp = palavra[i];
            strncat(palavra2, palavra+i,1);
        }
        i++;
    }while (palavra[i] != '\0');
 
    printf("\nThe number is:\n%s\n", palavra2);
    return 0;
}

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

dGUxdGUydGUzdGU0dGU1

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