macroul_dar_in_functie

#include <stdio.h>

int char_array_to_number(){
    int ch, sum = 0;

    while(true){
        ch = getchar();
        if(ch == '\n')
            break;
        sum = sum * 10 + (ch - '0');
    }
    return sum;
}

int main()
{
    printf("%d", char_array_to_number());
    return 0;
}