codice:
#include <stdio.h>
#include <string.h>

main() 
{
	FILE *file = fopen ("text.txt","r");
	FILE *fileOut = fopen ("result.txt","w");		
	
	char buffer[100];
	int i=0;
	char *string;

	while (fgets(buffer,100,file) != NULL)
	{
		string = strtok(buffer,"\n\t\r");
		
		while (string[i] == (i+48))	
			i++;

		fprintf(fileOut,"%d\n",i);

		i = 0;
	}	

}