《算法竞赛入门经典》第三章习题3-8

手机键盘（keyboard）

#include <stdio.h>char a[20];int main(){int i=0,n=0,b,c;char d;scanf("%s",a);    printf("%s\n",a);    n=sizeof(a);for(i=0;i<n;i++){if(  a[i]>='a' && a[i]<='o' ){b=a[i]-'a';c=b%3;d=a[i]-c;printf("%c%d ",d,c+1);}if(  a[i]>='p' && a[i]<='s')        {b=a[i]-'p';c=b%4;d=a[i]-c;printf("%c%d ",d,c+1);}if( a[i]>='t' && a[i]<='v' )         {b=a[i]-'t';c=b%3;d=a[i]-c;printf("%c%d ",d,c+1);}if( a[i]>='w' && a[i]<='z' )         {b=a[i]-'w';c=b%4;d=a[i]-c;printf("%c%d ",d,c+1);}}return 0;}