统计一串字符中英文字母的个数

字母个数

#include<stdio.h>int main(){char c;int l = 0;printf("输入一个字符：");while ((c = getchar()) && c != '\n'){if ((c >= 'a'&&c <= 'z') || (c >= 'A' &&c <= 'Z'))l++;}printf("字符中字母个数为：%d\n", l);return 0;}

字符串

#include<stdio.h>int main(){char c;int l = 0, s = 0, d = 0, o = 0;printf("请输入一个字符：");while ((c = getchar()) && c != '\n'){if ((c >= 'a'&&c <= 'z') || (c >= 'A' &&c <= 'Z'))l++;else if (c == ' ')s++;else if (c >= '0'&&c <= '9')d++;elseo++;}printf("字符中字母个数：%d，空格个数：%d，数字个数：%d，其他字符：%d\n", l,s,d,o);return 0;}