17th: Calculate Code line number practice code

Use some of the classes in the foundation:

Nsmanager

NSString

Nsarray

main.m//10-Calculates the number of lines of code////Created by xxx on 15/9/16.//Copyright (c) 2015 Itcast. All rights reserved.//#import <foundation/foundation.h>int countlineoffile (NSString * path) {//Get File Manager nsfile    Manager * Manager = [Nsfilemanager Defaultmanager];    Determine if path is not a computable file path BOOL isfile = NO;    BOOL exist = [Manager Fileexistsatpath:path isdirectory:&isfile];    if (!exist) {//path file path does not exist with return 0; }//If path exists if (isfile) {//path is folder//get all contents under current folder: folder and file Nsarray * Filearray = [Manager cont        Entsofdirectoryatpath:path Error:nil];        int count = 0; View all files and folders for (NSString * file in Filearray) {count + = Countlineoffile ([NSString stringWithFormat        : @ "%@/%@", Path,file]);    } return count;        } else{//Get file extension nsstring * extension = [path pathextension]; if (! ( [Extension isequaltostring:@ "h"] | |           [Extension isequaltostring:@ "M"]  || [Extension isequaltostring:@ "C"] | |            [Extension isequaltostring:@ "CPP"])        return 0; Get all contents of file path to path file NSString * Fileconten = [NSString stringwithcontentsoffile:path Encoding:nsutf8stringencodin        G Error:nil];        A string is divided into multiple strings with ' \ n ', that is, each line as a string Nsarray * array = [Fileconten componentsseparatedbystring:@ "\ n"];                for (NSString * str in array)//NSLog (@ "%@", str);    return (int) Array.count; }}int Main (int argc, const char * argv[]) {//count the number of lines of code in a file or folder, including empty lines int count = Countlineoffile (@ "/users/qujie/    DOCUMENTS/OC program/10-Calculate the number of lines of code ");    NSLog (@ "Count =%d", count); NSString * str = @ "123-456-789";//Nsarray * array = [str componentsseparatedbystring:@ "-"];//NSLog (@ "%@", arr    AY); return 0;}

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17th: Calculate Code line number practice code