C语言 io-文件拷贝

#include <stdio.h>
int main(int argc, const char *argv[])
{//1文件拷贝到2文件FILE* fileA=fopen(argv[1],"r");FILE* fileB=fopen(argv[2],"w+");if(NULL==fileA){perror("fopen");return -1;}if(NULL==fileB){perror("fopen");return -1;}char c;puts("------开始拷贝fileA------");while((c=fgetc(fileA))!=EOF){putchar(c);fputc(c,fileB);}fclose(fileA);fclose(fileB);FILE* fileC=fopen(argv[2],"r");puts("\n------拷贝结束------");while((c=fgetc(fileC))!=EOF){putchar(c);}fclose(fileC);return 0;
}                                                  

#include <stdio.h>
int main(int argc,const char* argv[]){//fscanf/fprintfFILE* fileC=fopen(argv[1],"r");FILE* fileD=fopen(argv[2],"w+");if(NULL==fileC){perror("fopen");return -1;}if(NULL==fileD){perror("fopen");return -1;}char c;puts("------开始拷贝fileC------");while(fscanf(fileC,"%c",&c)!=EOF){printf("%c",c);fprintf(fileD,"%c",c);}fclose(fileC);puts("\n------拷贝结束------");fseek(fileD,0,SEEK_SET);while(fscanf(fileD,"%c",&c)!=EOF){printf("%c",c);                     }fclose(fileD);
}

 

#include <stdio.h>
int main(int argc, const char *argv[])
{//fgets fputsFILE* fileA=fopen(argv[1],"r");FILE* fileB=fopen(argv[2],"w+");if(NULL==fileA){perror("fopen");return -1;}   if(NULL==fileB){perror("fopen");return -1;}   char c[10];while(fgets(c,sizeof(c),fileA)!=NULL){fputs(c,fileB);}fclose(fileA);fclose(fileB);                               return 0;
}