Object-C,循环语句for,while,do-while

//
//  main.m
//  for-while
//
//  Created by fansunion on 15/11/29.
//  Copyright (c) 2015年 demo. All rights reserved.
//

#import <Foundation/Foundation.h>

int main(int argc, const char * argv[]) {
@autoreleasepool {
//for循环
int number = 10;
int sum =0;
//int n = 0; 也可以在上面定义int变量n
for(int n=1;n<=number;n++){
sum += n;
}
NSLog(@"The sum is %i",sum);

//while循环
int  n2 = 1;
int sum2 = 0;
while(n2 <= 10){
sum2 += n2;
n2++;
}
NSLog(@"The sum2 is %i",sum2);

//do-while循环
int n3=1;
int sum3=0;
do{
sum3 += n3;
n3++;
}while(n3<=10);
NSLog(@"The sum3 is %i",sum3);
}
return 0;
}