Converting String to Integer

[dcjones]

Hi all,

I having been looking for a way of converting a string to an integer and in doing so I have read most if not all the posts concerning this process. After reading the OS reference documents I am no further to getting a solution.

What I ave is an SQL table and one of the fields contains "time" data which could be in the format of "+10:00" or "-4:30". In ideal circumstances the data I am being feed would be of the "int" type but unfortunately it is of the type "varchar". I need to split the string into parts so I can add the hours and minuets to the current time.

I have written the code for the split but I think I need to change the data from a string to an integer, is this possible, if so can anyone point me in the right direction.

My code so far is:

NSRange plusminus = NSMakeRange(3, 2);
	NSString *pm = [OffSet1 substringWithRange:plusminus];
	
	NSRange offSetHours = NSMakeRange(5, 3);
	NSString *offSetH = [OffSet1 substringWithRange:offSetHours];
	
	NSRange offSetMins = NSMakeRange(9, 3);
	NSString *offSetM = [OffSet1 substringWithRange:offSetMins];
	
	NSLog(@"The contents of Plus or Minus = %@",[pm  description]);
	NSLog(@"The contents of Offset Hours = %@",[offSetH  description]);
	NSLog(@"The contents of Offset Mins= %@",[offSetM  description]);
	
	
	NSDate *date = [NSDate date];
	NSDateFormatter *formatter = [[[NSDateFormatter alloc]init]autorelease];
	[formatter setDateFormat:@"HH:MM:SS"];
	NSString* str =[formatter stringFromDate:date];
	
	
	NSRange NowOffSetHours = NSMakeRange(5, 3);
	NSString *NowOffSetH = [OffSet1 substringWithRange:NowOffSetHours];
	
	NSRange NowOffSetMins = NSMakeRange(9, 3);
	NSString *NowOffSetM = [OffSet1 substringWithRange:NowOffSetMins];
	

	NSLog(@"The contents of now Hours = %@",[NowOffSetH  description]);
	NSLog(@"The contents of Mins Mins= %@",[NowOffSetM  description]);

[CAM]

Is this what you need

NSString *string;
string = @"22";
int *intFromString;
intFromString = [string intValue];

intFromString should now be 22

[dcjones]

Hi Cam,

Many thanks for your reply.

I tried out your code as is but when run it produces the follow warning:

"Assignment makes pointer from integer without a cast"

NSString *string;
string = @"22";
int *intFromString;
intFromString = [string intValue]; // Warning on this line.

[CAM]

sorry there was a mistake in my code

this is the updated code

NSString *string;
string = @"22";
int intFromString;
intFromString = [string intValue];

The problem with my code was this line

int *intFromString;

i screwed up by putting an * in front of the int name. That turned it into a pointer and you don't want an int to be a pointer.

[fousulameen]

Originally Posted by dcjones

Hi all,

I having been looking for a way of converting a string to an integer and in doing so I have read most if not all the posts concerning this process. After reading the OS reference documents I am no further to getting a solution.

What I ave is an SQL table and one of the fields contains "time" data which could be in the format of "+10:00" or "-4:30". In ideal circumstances the data I am being feed would be of the "int" type but unfortunately it is of the type "varchar". I need to split the string into parts so I can add the hours and minuets to the current time.

I have written the code for the split but I think I need to change the data from a string to an integer, is this possible, if so can anyone point me in the right direction.

My code so far is:

NSRange plusminus = NSMakeRange(3, 2);
	NSString *pm = [OffSet1 substringWithRange:plusminus];
	
	NSRange offSetHours = NSMakeRange(5, 3);
	NSString *offSetH = [OffSet1 substringWithRange:offSetHours];
	
	NSRange offSetMins = NSMakeRange(9, 3);
	NSString *offSetM = [OffSet1 substringWithRange:offSetMins];
	
	NSLog(@"The contents of Plus or Minus = %@",[pm  description]);
	NSLog(@"The contents of Offset Hours = %@",[offSetH  description]);
	NSLog(@"The contents of Offset Mins= %@",[offSetM  description]);
	
	
	NSDate *date = [NSDate date];
	NSDateFormatter *formatter = [[[NSDateFormatter alloc]init]autorelease];
	[formatter setDateFormat:@"HH:MM:SS"];
	NSString* str =[formatter stringFromDate:date];
	
	
	NSRange NowOffSetHours = NSMakeRange(5, 3);
	NSString *NowOffSetH = [OffSet1 substringWithRange:NowOffSetHours];
	
	NSRange NowOffSetMins = NSMakeRange(9, 3);
	NSString *NowOffSetM = [OffSet1 substringWithRange:NowOffSetMins];
	

	NSLog(@"The contents of now Hours = %@",[NowOffSetH  description]);
	NSLog(@"The contents of Mins Mins= %@",[NowOffSetM  description]);

my code:

NSString *string=@"5";
NSInteger value;
value=[string intValue];
NSLog(@"%d",value);


and there is no pointer for integer datatype.....