C fgetc与fgets

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

void myCount(char *filename);
void maxLine(char *filename);
int main(){

    char *filename="D:/23.txt";
    myCount(filename);
    maxLine(filename);
    return 1;
}

void myCount(char * filename){
    FILE * fp;
    fp=fopen(filename,"r");

    char ch;
    int countLine=1;
    int Uletters=0;
    int Sletters=0;
    int others=0;
    while( (ch=fgetc(fp))&&ch!=EOF  ){//EOF是一个char常量  表示读到了文件末位
        //printf("%c,",ch);//ok
        if(ch=='\n'){
            countLine++;
        }else if(ch==' '){

        }else if( ch>='a'&&ch<='z'  ){
            Uletters++;
        }else if( ch>='A'&&ch<='Z' ){
            Sletters++;
        }else {
            others++;
        }
    }
}

void maxLine(char * filename){
    FILE * fp;
    fp=fopen(filename,"r");

    char temp[100];
    char maxLine[100];
    int max=0;
    while(  !feof(fp)  ){//用foef(fp)函数来判断是否是文件末尾
        fgets(temp,100,fp);//实际上最多读入99个字符 因为读入的一行的末位要存放'\0'
        puts(temp);
        if(strlen(temp)>max){
            max=strlen(temp);
            strcpy(maxLine,temp);
        }
    }
    printf("maxLine is %s",maxLine);
}