例: PASCAL程序段: PROCEDURE INCWAP(M, N: INTEGER) LABEL START VAR K: INTEGER BEGIN START K:=M+1 M:=N+4; N: =K END例: PASCAL程序段： PROCEDURE INCWAP(M，N:INTEGER); LABEL START; VAR K:INTEGER; BEGIN START: K:=M+1; M:=N+4; N:=K; END