C Exercises: Copy a file in another name
C File Handling : Exercise-11 with Solution
Write a program in C to copy a file in another name.
Assume that the content of the file test.txt is : test line 1 test line 2 test line 3 test line 4
Sample Solution:
C Code:
#include <stdio.h>
#include <stdlib.h>
void main()
{
FILE *fptr1, *fptr2;
char ch, fname1[20], fname2[20];
printf("\n\n Copy a file in another name :\n");
printf("----------------------------------\n");
printf(" Input the source file name : ");
scanf("%s",fname1);
fptr1=fopen(fname1, "r");
if(fptr1==NULL)
{
printf(" File does not found or error in opening.!!");
exit(1);
}
printf(" Input the new file name : ");
scanf("%s",fname2);
fptr2=fopen(fname2, "w");
if(fptr2==NULL)
{
printf(" File does not found or error in opening.!!");
fclose(fptr1);
exit(2);
}
while(1)
{
ch=fgetc(fptr1);
if(ch==EOF)
{
break;
}
else
{
fputc(ch, fptr2);
}
}
printf(" The file %s copied successfully in the file %s. \n\n",fname1,fname2);
fclose(fptr1);
fclose(fptr2);
getchar();
}
Sample Output:
Copy a file in another name : ---------------------------------- Input the source file name : test.txt Input the new file name : test1.txt The file test.txt copied successfully in the file test1.txt.
Flowchart:

C Programming Code Editor:
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Next: Write a program in C to merge two files and write it in a new file.
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C Programming: Tips of the Day
What is the size of an enum in c?
An enum is only guaranteed to be large enough to hold int values. The compiler is free to choose the actual type used based on the enumeration constants defined so it can choose a smaller type if it can represent the values you define. If you need enumeration constants that don't fit into an int you will need to use compiler-specific extensions to do so.
Ref : https://bit.ly/3ypg4k8
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