#include<stdio.h> #include<string.h> int main(){ int i; char s[90]; gets(s); for(i=0;i<=strlen(s)-1;i++){ if((s[i]>='a'&&s[i]<='z')||(s[i]>='A'&&s[i]<='Z')) printf("%c",s[i]); } return 0; }
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