<{p}><{b}>以下程序的执行结果是<{br/}> int a,b,c,d,x; <{br/}> a=c=0; <{br/}> b=1; d=20;<{br/}> if (a) d=d-10; <{br/}> else if(b)<{br/}> if (!c) d=15; <{br/}> else d=25; <{br/}> printf("d=%d ",d);<{/b}><{br/}><{/p}>