#includevoid main(){ int n,s1,s2,t; for(n=10;n<=99;n++) { s1=n%10+n/10; t=n*2; if(t<100) s2=t%10+t/10; else s2=t%10+t/100+t/10%10; if(s1==s2) printf("n=%d s1=%d s2=%d\n",n,s1,s2); } }
