Question

How to copy file from one directory to another in C

Answer 1

#include <stdio.h>
#include <stdlib.h>
   
int main(int argc, char **argv) 
{ 
    if ( system("copy d:\\data.bin d:\\test") )
        perror(NULL);
    else
        printf("copy success");
    
    return 0;
}
   
/*
  
run:
   
1 file(s) copied.
copy success

*/

 

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Answer 2

#include <stdio.h>
#include <stdlib.h>
   
int main(int argc, char **argv) 
{ 
    if ( system("copy d:\\test\\data.bin d:\\backup") )
        perror(NULL);
    else
        printf("copy success");
    
    return 0;
}
   
/*
  
run:
   
1 file(s) copied.
copy success

*/

 

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Answer 3

#include <stdio.h>
   
int main(int argc, char **argv) 
{ 
    char source_file[30] = "d:\\test\\data.bin", target_file[30] = "d:\\backup\\data.bin";
    char ch;
    FILE *source, *target;
 
    source = fopen(source_file, "r");
 
    if (source == NULL)
    {
       perror(NULL);
       printf("%s - Error\n", source_file);
       return 1;
    }
 
    target = fopen(target_file, "w");
 
    if (target == NULL)
    {
       fclose(source);
       perror(NULL);
       printf("%s - Error\n", target_file);
       return 1;
    }
 
    while( ( ch = fgetc(source) ) != EOF )
        fputc(ch, target);
 
    printf("File copied successfully.\n");
 
    fclose(source);
    fclose(target);
    
    return 0;
}
   
/*
  
run:
   
File copied successfully.


*/

 

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