有以下程序：#include<stdio.h> #in

#include<stdio.h>
#include<string.h>
main()
{
char w[20],a[5][10]={"abcdef","ghijkl","mnopq","rstuv","wxyz."};
int i;
for(i=0;i<5;i++)w[i]=a[i][strlen(a[i])-1];
w[5]='\0';
puts(w);
}