原题链接：[编程入门]自定义函数之字符类型统计
解题思路:
1、可以使用gets()/scanf()获取待统计的字符。
2、scanf()获取字符的时候应该使用scanf("%[^\n]")，除了回车键全部读入。
注意事项:
参考代码:
#include<stdio.h>
#include<string.h>
void statistics(char *str, int *num_char, int *num_num, int *space_num, int *other_num)
{
int len=0, i=0;
len = strlen(str);
*num_char = 0;
*num_num = 0;
*space_num = 0;
*other_num = 0;
for(i = 0; i < len; i++)
{
if(str[i]>='0' && str[i]<='9')
*num_num+=1;
else if( (str[i]>='a' && str[i]<= 'z') || (str[i]>='A' && str[i]<='Z'))
*num_char+=1;
else if(str[i]==' ')
*space_num+=1;
else
*other_num+=1;
}
}
int main()
{
char Mystring[1024];
int num_char, num_num, space_num, other_num;
scanf("%[^\n]", Mystring);
statistics(Mystring, &num_char, &num_num, &space_num, &other_num);
printf("%d %d %d %d\n", num_char, num_num, space_num, other_num);
return 0;
}0.0分
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