1、文字複製 fgetc、fputc函式實現

#include <stdio.h>

int main(void)
{
    int ch;
    FILE *sfp;
    FILE *dfp;
    char sfilename[FILENAME_MAX];
    char dfilename[FILENAME_MAX];
    printf("source filename: "); scanf("%s", sfilename);
    printf("destination filename: "); scanf("%s", dfilename);
    
    
 
if((sfp = fopen(sfilename, "r")) == NULL)
        printf("\aSource file open failed.\n");
    else
    {
        if((dfp = fopen(dfilename, "w")) == NULL)
            printf("\aDestinatiom file open failed.\n");
        else
        {
            while((ch = fgetc(sfp)) != EOF)
                fputc(ch, dfp);
            fclose(dfp);
        }
        fclose(sfp);
    }
    
 
return 0;
}

2、二進位制複製、使用fread、fwrite函式實現

#include <stdio.h>

int main(void)
{
    int ch;
    FILE *sfp;
    FILE *dfp;
    char sfilename[FILENAME_MAX];
    char dfilename[FILENAME_MAX];
    printf("Source filename: "); scanf("%s", sfilename);
    printf("Destination filename: "); scanf("%s"
 
, dfilename);
    
    if((sfp = fopen(sfilename, "rb")) == NULL)
        printf("\aSource file open failed.\n");
    else
    {
        if((dfp = fopen(dfilename, "wb")) == NULL)
            printf("\aDestination file open failed.\n");
        else
        {
            int n;
            while(n = (fread(&ch, sizeof(int), 1, sfp)) > 0)
                fwrite(&ch, sizeof(int), 1, dfp);
            fclose(dfp);    
        } 
        fclose(sfp);
    }
    return 0;
}