1 #import <Foundation/Foundation.h> 2 3 int a,b,c;//静态变量 4 5 int main (int argc, const char * argv[]) 6 { 7 8 NSLog(@"BOOL type size:%d",sizeof(BOOL));//typedef signed char BOOL 9 10 if(FALSE == 0)//#define FALSE 011 {12 NSLog(@"FALSE == 0 FALSE is %d",FALSE);13 }14 else15 Read More