题解 | #统计字符#
统计字符
http://www.nowcoder.com/practice/539054b4c33b4776bc350155f7abd8f5
#include <cstdio>
#include <cstring>
using namespace std;
bool isLow(char ch) {
return ch>='a' && ch<= 'z';
}
bool isUp(char ch) {
return ch>='A' && ch<='Z';
}
bool isEn(char ch) {
return isLow(ch) || isUp(ch);
}
bool isSpace(char ch) {
return ch == ' ';
}
bool isNumber(char ch) {
return ch >= '0' && ch <= '9';
}
int main() {
char ch;
int arr[4];
memset(arr, 0, sizeof(arr));
while (EOF != scanf("%c", &ch)) {
if(ch == '\n') {
for(int i=0; i<4; i++) {
printf("%d\n", arr[i]);
}
memset(arr, 0, sizeof(arr));
} else if(isEn(ch)) {
arr[0]++;
} else if(isSpace(ch)) {
arr[1]++;
} else if(isNumber(ch)) {
arr[2]++;
} else{
arr[3]++;
}
}
return 0;
}
