Capitalize in Objective C

Published on 03 October 2020 (Updated: 16 December 2023)

Welcome to the Capitalize in Objective C page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
  NSAutoreleasePool *pool =[[NSAutoreleasePool alloc] init];
  NSString *usage = @"Usage: please provide a string";
  if (argc < 2) {
    printf("%s\n", [usage UTF8String]);
  else {
    NSString* textFromArg = [NSString stringWithUTF8String:argv[1]];
    NSString* normalizedText = [textFromArg stringByTrimmingCharactersInSet:[NSCharacterSet newlineCharacterSet]];

    if([normalizedText length] < 1){
      printf("%s\n", [usage UTF8String]);
    else {
      NSString *firstChar = [[normalizedText substringToIndex:1] uppercaseString];
      NSString *remainingText = [normalizedText substringFromIndex:1];
      NSString *capitalizedText = [firstChar stringByAppendingString:remainingText];
      printf("%s\n", [capitalizedText UTF8String]);

  [pool drain];
  return 0;

Capitalize in Objective C was written by:

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How to Implement the Solution

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How to Run the Solution

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