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（程序运行题）下面程序的运行结果是_______。#includeintmain(){intx=1,y=1,a=0,b=0;switch(x){case1:switch(y){case0:a++;case1:b++;case2:b++;break;}case2:a++;b++;break;case3:a++;b++;}printf("a=%d,b=%d\n",a,b);return0;}

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