文件读写与处理-优快云博客

本文链接：https://blog.youkuaiyun.com/pluspwing/article/details/5533112

本文演示了如何使用C语言进行文件的读取和写入操作，包括打开文件、读取内容到新文件、打印字符的十六进制表示，并统计字符数量。通过两个函数test1()和test2()展示了具体的实现过程。

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#include "Stdio.h" #include "Conio.h" #include int main() { test1(); getch(); return 0; } test1(){ char ch; FILE *fp; FILE *outfp; char str[800]; char cc=' '; long count=0; char *filename="c://upwing//word2a.txt"; char *filename2="c://upwing//word2b.txt"; if((fp=fopen(filename,"rb"))==NULL){ printf("can't open %s/n",filename); getch(); exit(1); } if((outfp=fopen(filename2,"ab"))==NULL){ printf("can't open %s/n",filename2); getch(); exit(1); } while(ch=getc(fp),ch!=EOF){ putc(ch,outfp); printf("%X ",ch); str[count]=ch; count++; } str[count]='/0'; /*puts("/n/n lichen de shu chu:/n/n"); */ /*puts(str); */ if(fclose(fp)!=0){ printf("close file failed 1/n"); } if(fclose(outfp)!=0){ printf("close file failed 2/n"); } printf("/nfile %s has %ld characters/n",filename,count); getch(); } test2(){ int ch; FILE *outfp; char str[800]="1234567890/t1234567890/r/nABCDEFGHIJKLMN/r/n,.//r/n樃晄?堈?恖?/r/nAAAAABBBBBCCCCC"; char *filename2="c://upwing//word2a.txt"; int n; str[64]=0xFF; if((outfp=fopen(filename2,"wb"))==NULL){ printf("can't open %s/n",filename2); getch(); exit(1); } for(n=0;n<800;n++){ if(str[n]=='/0'){ break; } putc(str[n],outfp); } if(fclose(outfp)!=0){ printf("close file failed 2/n"); } printf("/nfile %s has %ld characters/n",filename2,n); }