A simple example of a block's pass-through value is for reference only, Daniel do not spray

#import "ViewController.h"

typedef void (^sumblock) (int s); // declared as a type ;

/**

* define The block variable s with the declared block type sumblock, Sas an argument to the method sum,

*

* This will give the value of this block variable s parameter in the sum method Implementation, this value can be called in the

Where the sum method is used to get the value passed within the sum implementation by the parameter value of the block

*/

-(void) sum: (int) A:(int) b:(sumblock) s{

int sum = a+b;

s (sum);

}

-(void) Viewdidload {

[Superviewdidload];

[ self sum:8 :9 : ^ (int s) {

NSLog (@ "%d", s);

}];

}

A simple example of a block's pass-through value is for reference only, Daniel do not spray