我这个是有逻辑错误吗？为什么只能统计第一个单词的字符数量啊

Question

#include <stdio.h>

int main() {
    printf("请输入一串字符串：");
    char z[100];
    scanf("%s", z);
    int letter = 0, number = 0, blank = 0, other = 0, i = 0;
    
    while (z[i] !='\0') {
        if ((z[i] >= 'a' && z[i] <= 'z') || (z[i] >= 'A' && z[i] <= 'Z')) {
            letter++;
        } else if (z[i] >= '0' && z[i] <= '9') {
            number++;
        } else if (z[i] == ' ') {
            blank++;
        } else {
            other++;
        }
        i++;
    }
    
    printf("字母数量=%d\n数字数量=%d\n空格数量=%d\n其他=%d\n", letter, number, blank, other);
    
    return 0;
}

Answer 1

scanf函数读到空白字符前就结束了，用fgets函数读一行：
fgets(z,100,stdin);