#include <stdio.h> #include <string.h> int main() { char a[100]; int len,i; gets(a); len=strlen(a); for(i=0;i<len;++i) { if(a[i]>='a'&&a[i]<='z'||a[i]>='A'&&a[i]<='Z') printf("%c",a[i]); } }
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