c code for implementing binary search on both strings and numerals and showing comparisons as well..plz do reply..its urgent..

If you compare numbers with statement like
if (a < b) then something(); else (anotherthing);
you can compare strings like
if (strcmp(s1,s2) < 0) then somehingwhen_less_();
Read your notes / textbooks about how strings are ordered, that is why ABC is considered "less than" ABD,