copy.c实现

#cat copy.c
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int copyFile(char *fileRead,char *fileWrite);

int main(){
    char fileRead[100];
    char fileWrite[100];

    printf("要复制的文件:");
    scanf("%s",fileRead);
    printf("目标文件:");
    scanf("%s",fileWrite);

    if(copyFile(fileRead,fileWrite)){
        printf("拷贝成功");
    }else{
        printf("复制失败");
    }

    return 0;
}

int copyFile(char *fileRead,char *fileWrite){
    FILE *fpRead;
    FILE *fpWrite;
    int bufferLen=1024*4;
    char *buffer = (char*)malloc(bufferLen);
    int readCount;

    if((fpRead=fopen(fileRead,"rb")) == NULL || (fpWrite=fopen(fileWrite,"wb")) == NULL){
        printf("can not open file");
        exit(1);
    }

    while((readCount=fread(buffer,1,bufferLen,fpRead)) > 0){
        fwrite(buffer,readCount,1,fpWrite);
    }

    free(buffer);
    fclose(fpRead);
    fclose(fpWrite);
    return 1;

}