Instr ? integer (Numeric position)
Strcmp - integer
( if both the string are equal they result = 0)
Strcmp (Str1, Str2, Comparetype)
Comparing mode = 0 ? Binary Comparing 
1 ? Textual Comparing

for instr return type is int;
for strcmp return type is void;

?instr(1,"cherralathan","t")
 9 
?strcomp("aaa","aaa")
 0 
?strcomp("bbb","ccc")
-1 
?strcomp("ccc","bbb")
 1