Point(int x=0,int y=0):x(x),y(y){ count++; }我不懂

Point(int x=0,int y=0):x(x),y(y){ count++; }我不懂 Point(int x=0,int y=0):x(x),y(y){}和Point(int x=0,int y=0){x= Point(int i=0,int j=0):x(i),y(j){} point类中函数point (int a=0,int b=0) {x=a;y=b;} 是 搞不懂 求解释~~class A{ int x=0,y=0; A(int x,int y){ this.x=x;this for(int x=0,y=0;!x&&y int x=10; int y=x-- - --x; => y=0 计算机位操作：int abs( int x ) { int y ; y = x > > 31 ; return (x^y void f( int y,int *x) {y=y+*x; *x=*x+y;} main( ) { int x=2,y #includevoid f(int y,int *x){ y=y+*x; *x=*x+y;} void main(){ int max(int x,int y) int x=78; int y=0; while(x>0){ y++; }else x=x&(x-1); System.