C二级辅导-统计字符 （C语言代码）

#include "stdafx.h"

#include "string.h"

int main()

{

char a[100] = {0};

int len, i, c_letters = 0, c_blocks = 0,c_nums=0,c_others=0;

gets_s(a, sizeof(a));    // gets(a);

len = strlen(a);

for (i = 0; i < len; i++)

{

if ((a[i] >= 'a'&&a[i] <= 'z') || (a[i] >= 'A'&&a[i] <= 'Z'))

c_letters++;

else if (a[i] == ' ')

c_blocks++;

else if ((a[i] >= '0'&&a[i] <= '9'))

c_nums++;

else

c_others++;

}

printf("%d\n", c_letters);

printf("%d\n", c_blocks);

printf("%d\n", c_nums);

printf("%d\n", c_others);

return 0;

}