#include <stdio.h>
void main() {
int letters = 0, spaces = 0, digits = 0, others = 0;
char c;
while ((c = getchar()) != '\n') {
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z'))
letters++;
else if (c == ' ')
spaces++;
else if (c >= '0' && c <= '9')
digits++;
else
others++;
}
printf("l=%d,d=%d,s=%d,o=%d", letters, digits, spaces, others);
}
Character statistics: input line of characters, respectively, the statistics of the number of letters, spaces, numbers and other characters in them.
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Origin blog.csdn.net/qq_38490457/article/details/104808460
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