我刚刚学习C   还要漫漫理解哦

看了错误截图我改了一下看看能不能解决问题：
#include "stdio.h"
#include "stdlib.h"
void main()
{   
    char *p="The furthest distance in the world\nIs not between life and death\nBut when I stand in front of you\nYet you don't know that I love you\n";
    char ch,ch1,*q=NULL;
    int count;
    int t;
    /*主菜单程序段*/
lable1:printf("\n\t请选择功能:\n");           /*语句标号*/
       printf("\n\t=========================\n");/*(/t)指横向跳格*/
       printf("\n\t1:打开已有文件进行统计\n");
       printf("\n\t2:用户新建文件并进行统计\n");
       printf("\n\t3:结束程序\n");
       printf("\n\t=========================\n");
       scanf("%d",&t);getchar();            /*功能编号,消去输入的回车符*/
       if(t!=1&&t!=2&&t!=3)                 /*输入不正确,再次重复输入*/
       {
           printf("\n\t请重新选择功能键\n");
           goto lable1;                     /*再次重复显示主菜单并输入*/
       }
       switch(t)                            /*进入不同功能模块*/
       {
       case 1:goto lable2;
       case 2:goto lable3;
       case 3:exit(0);
       }
       /*模块功能1*/
lable2:printf("打开并显示已有文件:\n");      /*语句标号*/
      printf("%s\n",p);                     /*显示p指向的字符常量*/
      printf("请输入待统计的字符:\n");
      scanf("%c",&ch); getchar();
      count=0;                              /*计数器清零*/
      q=p;                                 /*指针q指向字符串常量*/
      t=4;
loop1:                                      /*语句标号*/
      if(*q=='\0')                          /*通过指针q的间接访问判断是否到文本结束标志*/
      {
          printf("%c的个数是:%d\n",ch,count); /*输出结果*/
          count=0;
          goto lable1;
      }
      else
      {
          if(*q==ch)                        /*用指针q间接访问字符,判断该字符是否为待统计的字符*/
          count++;
          q++;
          goto loop1;
      }
      /*功能模块2*/
lable3:printf("请输入待统计的字符:\n");
       scanf("%c",&ch); getchar();
       count=0;
       printf("请输入新建英文文章。回车结束输入!\n");
       t=4;
loop2:ch1=getchar();                        /*输入文章的每个字符，不储存*/
      if(ch1=='\n')                         /*回车结束输入*/
      {
          printf("%c的个数是:%d\n",ch,count);/*输出结果*/
          count=0;
          goto lable1;
      }
      else                                  /*文章未结束，继续输入并进行字符统计*/
      {
          if(ch1==ch)                       /*判断当前字符是否为待统计的字符*/
              count++;                     
          goto loop2;                       /*转入下一次判断*/
      }
   
}

你好~我想请问一下你帮我改的几处"count=0" "t=4"分别起什么作用，谢谢

太难了！