void func1(int i);void func2(int i);char st[ ]"hello, friend!";void funcl (int 1){printf("%c",st[i]);if(i<3) {i+=2;func2(i);}}void func2(int i){printf("%c", st[i]);if(i<3) {i+=2; funcl(i);}}main{int i=0;funcl(i);printf("\n");}
A. hello
B. hel
C. hlo
D. hlm3.定义如下变量和数组: int k; int a[3][3]={9,8,7,6,5,4,3,2,1};则下列语句的输出结果是(B)。for(k=D: k<3; k++) printf("d",a [k] (k]); 232A.7 5 3B.9 5 1C.9 6 3D.7 4 1