#import <Foundation/Foundation.h>
int main(int argc, const char * argv[]) {
@autoreleasepool {
//1.定义字符串对象
NSString *str=[NSString stringWithString:@"zi fu chuan"];
//2.计算字符串长度
NSUInteger len = [str length];
//3.输出字符串长度
NSLog(@"zi fu chuan的长度是%ld",len);
}
return 0;
}