2.统计英文文本文件src.txt中，有多少个大写字母、小写字母、数字、空格、换行以及其他字符。 假设src.txt的内容为：abbcProgramming is 1a2b3/Amazing.用c++语言实现一下这个代码

#include <stdio.h>
#include <ctype.h>

int main() {
    FILE *fp;
    char ch;
    int upper = 0, lower = 0, digit = 0, space = 0, newline = 0, other = 0;

    fp = fopen("src.txt", "r");
    if (fp == NULL) {
        printf("Failed to open file.");
        return 1;
    }

    while ((ch = fgetc(fp)) != EOF) {
        if (isupper(ch))
            upper++;
        else if (islower(ch))
            lower++;
        else if (isdigit(ch))
            digit++;
        else if (ch == ' ')
            space++;
        else if (ch == '\n')
            newline++;
        else
            other++;
    }

    fclose(fp);

    printf("Uppercase letters: %d\n", upper);
    printf("Lowercase letters: %d\n", lower);
    printf("Digits: %d\n", digit);
    printf("Spaces: %d\n", space);
    printf("Newlines: %d\n", newline);
    printf("Other characters: %d\n", other);

    return 0;
}