Tennis star Chris Evert, who retired from the game after eighteen years, perhaps ______ more than anyone to make women's professional tennis a widely respected career.
【单选题】如下程序的输出结果是______。 #include<stdio.h> main() { int x,a=3,b=4; for(x=0;x<3;x++) { switch(x) { case 0:a--; case 1:b--; case 2:break; case 3:a--;b--; } } printf('a=%d,b=%d/n',a,B) ; }