enc.c

#include<stdio.h>
#include<stdlib.h>

void encrypt(FILE * secret_file,FILE * encrypted_file,FILE * key_file){
	int c;
	while((c = fgetc(secret_file))!=EOF){
		int key = rand();
		int encrypted_c = c ^ key;
		fputc(key,key_file);
		fputc(encrypted_c,encrypted_file);
	}

}


int main(int argc,char *arvg[]){
	if(argc!=2){
		printf("Provide the to-be encrypted file\n");
	}
	else{
		char * secret_file_name = arvg[1];
		FILE * secret_file = fopen(secret_file_name,"r");
		FILE * encrypted_file = fopen("crypt.out","w");
		FILE * key_file = fopen("key.out","w");
		encrypt(secret_file,encrypted_file,key_file);
		fclose(secret_file);
		fclose(encrypted_file);
		fclose(key_file);
	}
	return 0;
}