C++作业题与答案(2)

//*/ /*n=5 s=153

Press any key to continue*/

/*/ e4

#include #include void main() { int a,b,c,n;

for(n=100;n<=999;n+=1) {a=n/100;

b=(n-a*100)/10; c=n-100*a-10*b; if(n==pow(a,3)+pow(b,3)+pow(c,3)) cout<

Press any key to continue */

/*/ e5 ①

#include void main() { int m,i=2; cout<<\ cin>>m;

cout<

{ if (m%i==0) {cout<<\ m=m/i;} else i++; }while (i<=m); cout<

/*m=540

540=1*2*2*3*3*3*5

Press any key to continue*/

/*/ e5②

#include void main()

{int n=1,i,sum,y=0; do{sum=0;

for(i=1;i

{ if(n%i==0) sum+=i;} if(sum==n) {cout<

if(y%5==0) cout<

6 28 496 Press any key to continue*/ /*/ e6

#include #include void main()

{double x,x0,x1,a,epson; cout<<\ cin>>a;

epson=1E-7; x0=1;

for ( x1=0.5*(1+a);fabs(x1-x0)>=epson;x=x1) { x0=x1;

x1=0.5*(x0+a/x0); }

cout<

2的平方根x=1.41421 Press any key to continue*/

/*/ e7 ①

#include void main()

{int i,j,k;

for (i=1;i<=10;i++)

{ for(j=1;j<=10-i;j++) cout<<\

for (k=1;k<=2*i-1;k++) cout<<\ cout<

* *** ***** ******* ********* *********** ************* *************** ***************** ******************* Press any key to continue*/

/*/ e7 ②

#include void main() {int i,j,k;

for (i=1;i<=8;i++)

{ for (j=0;j<=i-1;j++) cout<<\

for(k=1;k<=21-2*i;k++) cout<<\ cout<

* *** ***** ******* ********* *********** *************

*************** ***************** ******************* Press any key to continue*/

/*/ e8①

#include void main()

{ cout<<\ for(int i=1;i<=9;i++) {cout<

for(int j=1;j<=9;j++) {cout<<\ cout<

* 1 2 3 4 1 1 2 3 4 2 2 4 6 8 3 3 6 9 12 4 4 8 12 16 5 5 10 15 20 6 6 12 18 24 7 7 14 21 28 8 8 16 24 32 9 9 18 27 36 Press any key to continue*/

/*/ e8②

#include void main()

{ cout<<\ for (int i=1;i<=9;i++) { cout<

for (int j=1;j<=i;j++) cout<<\ cout<

5 6 5 6 10 12 15 18 20 24 25 30 30 36 35 42 40 48 45 54 7 8 7 8 14 16 21 24 28 32 35 40 42 48 49 56 56 64 63 72 9 9 18 27 36 45 54 63 72 81 * 1 2 3 4 5 6 7 8 9 1 1

2 2 4

3 3 6 9

4 4 8 12 16

5 5 10 15 20 25

6 6 12 18 24 30 36

7 7 14 21 28 35 42 49

8 8 16 24 32 40 48 56 64

9 9 18 27 36 Press any key to continue*/

/*/ e8③

#include void main()

{ cout<<\ for (int i=1;i<=9;i++) { cout<

for (int j=1;j

* 1 2 3 4 1 1 2 3 4 2 4 6 8 3 9 12 4 16 5 6 7 8 9 Press any key to continue*/

/*/ e9 ①

#include #include void main()

45 54 5 6 5 6 10 12 15 18 20 24 25 30 36 63 72 7 8 7 8 14 16 21 24 28 32 35 40 42 48 49 56 64 81 9 9 18 27 36 45 54 63 72 81