Convert unix line breaks to DOS line breaks

unix2dos.cpp

/*
	unix2dos By DreamVB
	Version 1.0
	Convert unix line breaks \r to dos \r\n

	Please feel free to to use as you like.
	Please let me know if you found this code usfull e. dreamvb@outlook.com
*/

#include <stdio.h>
#include <string>

int main(int argc, char* argv[]){
	FILE *fin = NULL;
	FILE *fout = NULL;
	char c = '\0';
	char d = '\0';

	if(argc < 3){
		printf("Usage: <InFile> <OutFile>\n");
		return 0;
	}

	//Open inputfile.
	fin = fopen(argv[1],"rb");
	//Try and see if inputfile opened.
	if(fin == NULL){
		printf("IO/Error cannot open file\n");
		return 0;
	}
	//Open output file
	fout = fopen(argv[2],"wb");

	//See if output file opened.
	if(!fout){
		printf("IO/Error cannot write file\n");
		return 0;
	}

	while(!feof(fin)){
		c = fgetc(fin);

		if(c != EOF){
			if(c == '\r'){
				//Check next char
				d = fgetc(fin);

				if(d != '\n'){
					fputc(c,fout);
					fputc('\n',fout);
					continue;
				}
				else{
					fputc('\r',fout);
					fputc('\n',fout);
					continue;
				}
			}
			fputc(c,fout);
		}
	}

	//Close files
	fclose(fin);
	fclose(fout);

	return 1;
}