统计data.txt文件中大写字符、小写字符、数字、其他字符的个数,代码如下:
/*统计一个文件中的大写字母 小写 字母 数字 及其他字符的个数*/void chapter1::statistic(){printf_s("统计文件开始\r\n");char *path = "D:\\000testprocess\\c_lesson\\Debug\\data.txt";FILE *f;int r = fopen_s(&f, path, "r");if (r>0){printf_s("读取文件错误");}int capletter = 0, lowercase = 0 , num = 0, other = 0;char temp = fgetc(f);while (!feof(f)){if (temp>='a' && temp <='z'){lowercase++;}else if (temp >= 'A' && temp <= 'Z'){capletter++;}else if (temp >='0' && temp <= '9'){num++;}else{other++;}temp = fgetc(f);}printf_s("大写字符:%d 小写字符个数:%d 数字个数:%d 其他字符个数:%d",capletter,lowercase,num,other);fclose(f);printf_s("统计文件结束\r\n");}
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