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˵Ã÷£ºÎÄÕÂÄÚÈݽö¹©Ô¤ÀÀ£¬²¿·ÖÄÚÈÝ¿ÉÄܲ»È«£¬ÐèÒªÍêÕûÎĵµ»òÕßÐèÒª¸´ÖÆÄÚÈÝ£¬ÇëÏÂÔØwordºóʹÓá£ÏÂÔØwordÓÐÎÊÌâÇëÌí¼Ó΢ÐźÅ:xxxxxxx»òQQ£ºxxxxxx ´¦Àí£¨¾¡¿ÉÄܸøÄúÌṩÍêÕûÎĵµ£©£¬¸ÐлÄúµÄÖ§³ÖÓëÁ½⡣

.

{r=n%m; n=m; m=r; }

cout<<\

cout<<\ // pÊÇÔ­À´Á½¸öÕûÊýµÄ³Ë»ý return 0; }

3.16Ìâ

#include using namespace std; int main () {char c;

int letters=0,space=0,digit=0,other=0; cout<<\ while((c=getchar())!='\\n')

{if (c>='a' && c<='z'||c>='A' && c<='Z') letters++; else if (c==' ') space++;

else if (c>='0' && c<='9') digit++; else other++; }

cout<<\ other:\ return 0; } 3.17Ìâ

#include using namespace std; int main ()

{int a,n,i=1,sn=0,tn=0; cout<<\ cin>>a>>n; while (i<=n)

{tn=tn+a; //¸³ÖµºóµÄtnΪi¸öa×é³ÉÊýµÄÖµ sn=sn+tn; //¸³ÖµºóµÄsnΪ¶àÏîʽǰiÏîÖ®ºÍ a=a*10; ++i;

.

.

}

cout<<\ return 0; } 3.18Ìâ

#include using namespace std; int main () {float s=0,t=1; int n;

for (n=1;n<=20;n++) {

t=t*n; // Çón!

s=s+t; // ½«¸÷ÏîÀÛ¼Ó }

cout<<\ return 0; }

3.19Ìâ

#include using namespace std; int main () {int i,j,k,n;

cout<<\ for (n=100;n<1000;n++) {i=n/100; j=n/10-i*10; k=n;

if (n == i*i*i + j*j*j + k*k*k) cout<

cout<

#include using namespace std; int main()

{const int m=1000; // ¶¨ÒåѰÕÒΧ int k1,k2,k3,k4,k5,k6,k7,k8,k9,k10; int i,a,n,s;

for (a=2;a<=m;a++) // aÊÇ2~1000Ö®¼äµÄÕûÊý£¬¼ì²éËüÊÇ·ñΪÍêÊý {n=0; // nÓÃÀ´ÀÛ¼ÆaµÄÒò×ӵĸöÊý

.

.

s=a; // sÓÃÀ´´æ·ÅÉÐδÇó³öµÄÒò×ÓÖ®ºÍ£¬¿ªÊ¼Ê±µÈÓÚa for (i=1;i

if (s==0) // s=0±íʾȫ²¿Òò×Ó¶¼ÒÑÕÒµ½ÁË {cout<

if (n>1) cout<1±íʾaÖÁÉÙÓÐ2¸öÒò×Ó

if (n>2) cout<<\±íʾÖÁÉÙÓÐ3¸öÒò×Ó£¬¹ÊÓ¦ÔÙÊä³öÒ»¸öÒò×Ó if (n>3) cout<<\±íʾÖÁÉÙÓÐ4¸öÒò×Ó£¬¹ÊÓ¦ÔÙÊä³öÒ»¸öÒò×Ó if (n>4) cout<<\ // ÒÔÏÂÀàËÆ if (n>5) cout<<\ if (n>6) cout<<\ if (n>7) cout<<\ if (n>8) cout<<\ if (n>9) cout<<\ cout<

.

.

return 0; }

3.20ÌâÁíÒ»½â

#include using namespace std; int main() {int m,s,i;

for (m=2;m<1000;m++) {s=0;

for (i=1;i

if ((m%i)==0) s=s+i; if(s==m)

{cout<

if (m%i==0) cout<

return 0; }

3.20ÌâÁíÒ»½â

#include using namespace std; int main() {int k[11]; int i,a,n,s;

for (a=2;a<=1000;a++) {n=0; s=a;

for (i=1;i

k[n]=i; // ½«ÕÒµ½µÄÒò×Ó¸³¸øk[1]©©k[10] } if (s==0)

{cout<

.

.

return 0; }

3.21Ìâ

#include using namespace std; int main()

{int i,t,n=20;

double a=2,b=1,s=0; for (i=1;i<=n;i++) {s=s+a/b; t=a;

a=a+b; // ½«Ç°Ò»Ïî·Ö×ÓÓë·Öĸ֮ºÍ×÷ΪÏÂÒ»ÏîµÄ·Ö×Ó b=t; // ½«Ç°Ò»ÏîµÄ·Ö×Ó×÷ΪÏÂÒ»ÏîµÄ·Öĸ }

cout<<\ return 0; }

3.22Ìâ

#include using namespace std; int main()

{int day,x1,x2; day=9; x2=1;

while(day>0)

{x1=(x2+1)*2; // µÚ1ÌìµÄÌÒ×ÓÊýÊǵÚ2ÌìÌÒ×ÓÊý¼Ó1ºóµÄ2±¶ x2=x1; day--; }

cout<<\ return 0; }

3.23Ìâ

#include #include using namespace std; int main() {float a,x0,x1;

cout<<\ cin>>a; // ÊäÈëaµÄÖµ x0=a/2;

.

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