에러가 납니다.

#include <stdio.h>
#include <stdlib.h>
 
int main(int argc, char*argv[]){
	int c;
	int j=0;
	int i=1;
	char String[2][18];
	int Number[2][18];
 
FILE *ifp, *ofp;
fopen_s(&ifp,argv[1], "r");
fopen_s(&ofp,argv[2], "w");
 
	if (argc!=3){
		printf("error\n");
		exit(1);
	}
 
 
 
for (i=1; i<=2; i++){
	for (j=1;j<=18; j++){
		String[i][j]=0;
		Number[i][j]=0;
	}
}
i=1;
 
	while((c=getc(ifp))!=EOF){
 
		for( j=1; j<=18; j++){
			if (j==2 || j==4 || j==6 || j==8 || j==10 || j==12 || j==14 || j==16 || j==18){
				String[i][j]=c;
			}
			else {
				Number[i][j]=c;
			}
 
 
 
			if(i%18==0){
				putc('\n', ofp);
				i++;		
			}
 
		fprintf(ofp,"%s:%d      ,\n", String[i][j], Number[i][j]);
 
	}
	putc('\n', ofp);
	return 0;
}
 
}