写出下面程序的执行结果。main(){ int x=1,y=1,z=0;if(z0)if(y0) x=3;else x=5;printf(%d\tif(z=y0) x=3;else if(y= =0 ) x=5;else x=7;printf(%d\tprintf(%d\t}

【单选题】【消耗次数：1】

① 1 7 0

② 3 7 0

③ 5 5 0

④ 1 5 1

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