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https://uva.onlinejudge.org/index.php?option=com_onlinejudge&Itemid=8&page=show_problem&problem=435
#include <stdio.h>
int main () {
char In, M, N, Cou;
while (scanf("%c", &In) == 1) {
M = 0; Cou = 0;
while (In != '\n') {
if ((65 <= In && In <= 90) || (97 <= In && In <= 122)) N = 1;
else N = 0;
if (M == 0 && N == 1) Cou++;
M = N;
scanf("%c", &In);
}
printf("%d\n", Cou);
}
return 0;
}
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