083.封装fgetc和fputc

#include<stdio.h>
#include<stdlib.h>
void my(char *ccc, int bbb, FILE*read) {
for (size_t i = 0; i < bbb-1; i++)
{
char teamp= fgetc(read);
ccc[i] = teamp;
if (feof(read)!= 0) {
ccc[i] = '\0';
break;
}
else if (teamp == '\n') {
ccc[i+1] = '\0';
break;
}
}
}
void main() {
char abc[200] = { 0 };
printf("请输入原始地址");
scanf("%s", abc);
FILE*read = fopen(abc, "r");
char teamp[90] = { 0 };
if (teamp!=NULL) {
while (feof(read)==0) {
my(teamp, sizeof(teamp), read);
printf("%s", teamp);
}
}
fclose(read);
system("pause");
}

我们之前学习的fgetc和fputc，一次只能读入或者写出一个char字节。
为了能够让这两个函数更加好用一点，我们进行一下封装。

fgets和fputs分别是fgetc和fputc的封装.
fgets是读入一行.
fputs是写出一段文本.

 

//读入一行字符串
void my_fgets(char *p_buffer, int p_maxcount, FILE *p_read) {
 for (size_t i = 0; i < (p_maxcount - 1); i++) {
  char l_temp = fgetc(p_read);
  p_buffer[i] = l_temp;
  if (l_temp == '\n') {
   p_buffer[i + 1] = '\0';
   break;
  }
  else if (feof(p_read) != 0) {
   p_buffer[i] = '\0';
   break;
  }
 }

 

}

 

 

 

---

 

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

 

void main1() {
 char l_in_path[200] = { 0 };
 printf("请输入要处理的文件:");
 scanf("%s", l_in_path);
 FILE * l_fp_read = fopen(l_in_path, "r");
 if (l_fp_read != NULL) {
  char l_temp[7] = { 0 };

 

  while (feof(l_fp_read) == 0) {
   fgets(l_temp, sizeof(l_temp), l_fp_read);
   printf("%s", l_temp);
  }
 }

 

 system("pause");
}

 

void main() {
 char l_out_path[200] = "456.txt";
 FILE * l_fp_write = fopen(l_out_path, "w");
 if (l_fp_write != NULL) {
  fputs("你好,我是一名中国人.\n我特别热爱编程!", l_fp_write);
 }
 fclose(l_fp_write);
 system("pause");
}