Printing from an open text file

scardoso (27)
I need to create a text file that looks like:

first line
second line
third line
forth line
fifth line
sixth line

I want to replace the third and forth lines with three new lines. The above contents would become:

first line
second line
new line1
new line2
new line3
fifth line
sixth line

How can I do this using c++?

never was taught file function in c++ and really need the help...Anything would be greatly appreciated thanks
Last edited on
kbw (9488)
You need to rewrite the file with the new output. Forget that seek stuff.
scardoso (27)
@kbw I can now open the file but how do I print its contents out...I have been trying but getting nowhere


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#include <stdio.h>

int main()
{
	FILE * pFile;
	char file[100];

	if ((pFile = fopen ("Q4.txt", "r")) == NULL)
	{
		printf("File could not be opened\n");
	}
	
	int k;

	for(k = 0; k <= 5; k++)
	{
		fscanf (pFile, "%s", &file[k]);
		printf("%s\n", file[k]);
	}

	pFile = fopen ("Q4.txt","w");
	 if (pFile != NULL)
	 {
		fputs ("first line\nsecond line\nthird line\nfourth line\nfifth line\n\n",pFile);
		fclose (pFile);
	 }
}
Last edited on
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