#include <stdio.h>

#include <stdlib.h>

int main(void)

{

char s[100];

int i,j,k=0,dot=0;

printf("input your text:\n");

do

{ gets(s+k);

k = strlen(s);

s[k] = 0;

for (i=0;i<k;i++) if (s[i]==".") dot=1;

} while (dot==0);

if (s[0] >="a" && s[0] <="z") s[0]=s[0]-"a"+"A";

for (i=1;i<k;i++) {

if (s[i] >="A" && s[i] <="Z") s[i]=s[i]-"A"+"a";

}

for (i=1;i<k;i++) while (s[i-1]==" " && s[i] == " ") for (j=i;j<k;j++) s[j]=s[j+1];

printf("%s\n",s);

return 1;

}