iphone - How to search NSArray in Objective C -

hi friends, have array consists of many names. want search names starting character "c". how can search array.

nsstring* firstletter;  for(nsstring* currentstring in yourarray) {      firstletter = [nsstring stringwithformat:@"%c", [currentstring characteratindex:0]];      if([firstletter isequaltostring:@"c"])      {           // name ok      }      else      {          // name wrong      } }