A . s1-s2
B . s1+s2
C . substr(s1,1,8)+s2
D . str(s1-s2)
[单选题]若有两个字符串s1="12345",s2="34",执行s=Instr(s1,s2)后,s的值为( )。A.2B.3C.4D.5
[单选题]判断字符串s1是否大于字符串s2,应该使用()。A.if(strcmp(s1,s2)s2)C.if(strcmp(s2,s1)判断字符串s1是否大于字符串s2,应该使用( )。A.if(strcmp(s1,s2)<0)B.if(s1>s2)C.if(strcmp(s2,s1)<0)D.if(strcmp(s1,s2))
[单选题]判断字符串s1是否大于字符串s2,应该使用( )。A.if(strcmp(s1,s2)s2)C.if(strcmp(s2,s1判断字符串s1是否大于字符串s2,应该使用( )。A.if(strcmp(s1,s2)<0)B.if(s1>s2)C.if(strcmp(s2,s1)<0)D.if(strcmp(s1,s2))
[单选题]若想从字符串"上海市"中取出"海"字,应用函数()。A . SUBSTR("上海市",2,2)B . SUBSTR("上海市",2,1)C . SUBSTR("上海市",3,1)D . SUBSTR("上海市",3,2)
[单选题]下列语句中,在字符串s1和s2相等时显示"they are Equal"的是( )。A.if(*s1==*s2)B.if(!strcmp(s1,s2)) puts("they are Equal"); puts("they are Equal");C.if(s1==s2)D.if(strcmp(s1,s2)) Puts("they are Equal"); puts("they are Equal");
[单选题]下列语句中,在字符串s1和s2相等时显示"they are Equal"的是( )。A.if(*s1==*s2) puts("they are Equal");B.if(!strcmp(s1,s2)) puts("they are Equal");C.if(s1==s2) Puts("they are Equal");D.if(strcmp(s1,s2) ) puts("they are Equal");
[单选题]若REPLACE(S,S1,S2)表示用字符串S2替换字符串S中的子串S1的操作,则对于S=“Beijing&Nanjing”,S1=“Beijing”,S2=“Shanghai”,REPLACE(S,S1,S2)=()。A . “Nanjing&Shanghai”B . “Nanjing&Nanjing”C . “ShanghaiNanjing”D . “Shanghai&Nanjing&rdquo
[单选题]下述语句中,在字符串s1和s2相等时显示"they are Equal"的是( )。A.if(*s1=*s2) puts("they are Equal");B.if(!strcmp(s1,s2)) puts("they are Equal");C.if(s1==s2) puts("they are Equal");D.if(strcmp(s1,s2)) puts("they are Equal");
[单选题]以下能从字符串/"VisualBasic/"中直接取出子字符串/"Basic/"的函数是( )。A.LeftB.MidC.StringD.Instr
[单选题]"计算机等级考试"这7个汉字作为字符串常量,在VFP中可表示为()。A . {计算机等级考试}B . (计算机等级考试)C . 计算机等级考试D . "计算机等级考试"