Someone

			int buffer[1024];
			int scor =0;
			int rightinput = 0;
			int bigwhile =0;
			while (bigwhile==0) {
				while (rightinput == 0) {
	printf("Doste sintategmenes morfis x,y=z Prepei na ixuei"  "-1<=(x,y)<=8 kai 0<=z<=9\n");
				fgets(buffer, sizeof(buffer), stdin);
					if (strcmp(buffer, "score\n") == 0) 
						printf("%d\n", scor);
						else
					sscanf(buffer ,"%d,%d=%d",&x,&y,&z);
					if (x == -1 && y == -1 && z == -1) {
						bigwhile=1;
						rightinput=1;