text1 + text2 =text3

手动创建两个文本文件text1.txt,text2.txt,要求编程创建text3.txt,实现text1.txt和text2.txt文件中除去首行和末尾对应的数据相加,三个文本的内容如下

#include <stdio.h>#define SIZE 10int main(){FILE *fp1 = fopen("text1.txt","ab+");if(fp1 == NULL){perror("fopen");return -1;}FILE *fp2 = fopen("text2.txt","ab+");if(fp2 == NULL){perror("fopen");return -1;}FILE *fp3 = fopen("text3.txt","ab+");if(fp3 == NULL){perror("fopen");return -1;}int ret1;int ret2;char buf1[SIZE] = {0};char buf2[SIZE] = {0};while(ret1 = fread(buf1,sizeof(char),1,fp1)){ret2 = fread(buf2,sizeof(char),1,fp2);if(ret2 == 0 && !feof(fp2))  {  perror("fread");  return -1;  }  if( buf2[0] == buf1[0] &&  buf1[0] < '0' || buf2[0]> '9'){fwrite(buf1,sizeof(char),1,fp3);}if(buf1[0] >= '0' && buf1[0] <= '9'&& buf2[0] >= '0' && buf2[0] <= '9'){char tmp[1] = {0};              tmp[0] = buf1[0] + buf2[0] - '0';              fwrite(tmp, sizeof(char), 1, fp3);  }}if(ret1 == 0 && !feof(fp1))  {  perror("fread");  return -1;  }  close(fp1);close(fp2);close(fp3);return 0;}