dev c++ 求二元一次方程的根 各种情况,一元,二元,有解,虚根, 帮忙看...答:if (a=0,b=0,c=0) printf("x1=x2=R");但之后 if (a=0,b!=0,c!=0) printf("x1=x2=%f",-c/b); else if (d>=0) printf("x1=%f,x2=%f",-b+tem/(2*a),-b-tem/(2*a)); else printf("%f,%f\n%f,%f",-b/2*a,-tem/2*a\n,b/2*a,-tem/2*a);中间的...