输入一行字符,分别统计出其中英文字母、空格、数字和其它字符的个数
利用while语句,条件为输入的字符不为’\n’
#include "stdio.h" #include "conio.h" main() { char c; int letters=0,space=0,digit=0,others=0; printf("please input some characters\n"); while((c=getchar())!='\n') { if(c>='a'&&c<='z'||c>='A'&&c<='Z') letters++; else if(c==' ') space++; else if(c>='0'&&c<='9') digit++; else others++; } printf("all in all:char=%d space=%d digit=%d others=%d\n",letters, space,digit,others); getch(); }