A.E(X+Y)=E(X)+E(Y)
B.D(X+Y)=D(X)+D(Y)
C.E(XY)=E(X)E(Y)
D.D(XY)=D(X)D(Y)
设X=123,Y=456,z="X+Y",则表达式6+&Z的值是______。
A.6+&Z
B.6+X+Y
C.585
D.错误提示
A.fun1(x, y) { int x, y; double z;z=x+y;return z; }
B.fun1(int x, y){ int z;return z; }
C.double fun1(int x, int y) { z=x+y; return z; }
D.double fun1(int x, int y){ double z;z=x+y; return z; }"
以下程序段的执行结果为______。 define PLUS(X,Y)X+Y main() { int x=1,y=2,z=3,sum; sum=PLUS(x+y,z)*PLUS(y,z); printf("SUM=%d",sum); }
A.SUM=9
B.SUM=12
C.SUM=18
D.SUM=28