Write a c program to copy the contents from one file to another file?

Answer 1

#include #include int main() { FILE *fs1, *fs2, *ft; char ch, file1[20], file2[20], file3[20]; printf("Enter name of first file\n"); gets(file1); printf("Enter name of second file\n"); gets(file2); printf("Enter name of file which will store contents of two files\n"); gets(file3); fs1 = fopen(file1,"r"); fs2 = fopen(file2,"r"); if( fs1 == NULL fs2 == NULL ) { perror("Error "); printf("Press any key to exit...\n"); getch(); exit(EXIT_FAILURE); } ft = fopen(file3,"w"); if( ft == NULL ) { perror("Error "); printf("Press any key to exit...\n"); exit(EXIT_FAILURE); } while( ( ch = fgetc(fs1) ) != EOF ) fputc(ch,ft); while( ( ch = fgetc(fs2) ) != EOF ) fputc(ch,ft); printf("Two files were merged into %s file successfully.\n",file3); fclose(fs1); fclose(fs2); fclose(ft); return 0; }

Answer 2

hi friends this is bilal ahmed shaik from vijayawada persuing MCA -1st year in NRI(agiripalli)

i think for this question the program might be like this

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#include<stdio.h>

#include<conio.h>

#include<stdlib.h>

void main(int arg,char *arr[])

{

FILE *fs,*ft;

char ch;

clrscr();

if(arg!=3)

{

printf("Argument Missing ! Press key to exit.");

getch();

exit(0);

}

fs = fopen(arr[1],"r");

if(fs==NULL)

{

printf("Cannot open source file ! Press key to exit.");

getch();

exit(0);

}

ft = fopen(arr[2],"w");

if(ft==NULL)

{

printf("Cannot copy file ! Press key to exit.");

fclose(fs);

getch();

exit(0);

}

while(1)

{

ch = getc(fs);

if(ch==EOF)

{

break;

}

else

putc(ch,ft);

}

printf("File copied succesfully!");

fclose(fs);

fclose(ft);

}

Answer 3

#include<stdio.h>

#include<stdlib.h>

#include<conio.h>

main()

{

FILE *fs,*fd;

char c;

fs=fopen("copy.c","r");

if(fs=NULL)

{

printf("source file cannot be opened");

exit(0);

}

fd=fopen("destination.txt","w");

if(fd=NULL)

{

printf("target file cannot be opened");

fclose(fs);

exit(0);

}

while(1)

{

c=getc(fs);

if(c=EOF)

break;

else

putc(c,fd);

fclose(fs);

fclose(fd);

printf("file copy operation performed sucessfully");

}

getch();

}