若串S1=‘ABCDEFG’,S2=‘9898’,S3=‘...,length(S2)))其结果为()
举一反三
- 若串 S1= ‘ ABCDEFG ’ , S2= ‘ 9898 ’ ,S3= ‘...,length(S2))) 其结果为()
- 若串S1=‘ABCDEFG’,S2=‘9898’,S3=‘...,length(S2)))其结果为()
- 若串S1=‘ABCDEFG’, S2=‘9898’ ,S3=‘###’,S4=‘...8’),length(S2)))其结果为
- 设字符串S1=″ABCDEFG″,S2=″PQRST″,则运算 S=CONCAT(SUBSTR(S1,2,LENGTH(S2)),SUBSTR(S1,LENGTH(S2),2)) 后S的结果为() A: ″BCQR″ B: ″BCDEF″ C: ″BCDEFG″ D: ″BCDEFEF″
- 设字符串s1="abcdefg",s2="pqrst",则运算s=strcat(substr(s1,2,length(s2)),substr(s1,length(s2),2))后串值为( )。 A: "bcdefef" B: "bcpqrst" C: "bcdefg" D: "bcdef"