실수인지 아닌지를 판별하는 프로그램을짤려고하는데요(조금급합니다 ㅠㅠ)

#include<stdio.h>
void main()
{
	int state=0, sym;
	char ch;
	int any=0;
 
	int a[11][5] = {{2,10,10,1,9}
					,{2,10,10,10,9}
					,{2,5,10,10,3}
					,{4,5,8,10,10}
					,{4,5,8,10,10}
					,{7,10,10,6,10}
					,{7,10,10,10,10}
					,{7,10,8,10,10}
					,{10,10,10,10,10}
					,{4,10,10,10,10}
					,{10,10,10,10,10}};
	do{
		ch = getchar();
		if(ch=='\n')
			return 0;
	}
 
	while((ch=getchar())!='\n'){
		if(ch==0||1||2||3||4||5||6||7||8||9)
			sym=0;
		else if(ch=='e'||'E')
			sym=1;
		else if(ch=='f'||'F'||'l'||'L')
			sym=2;
		else if(ch=='+'||'-')
			sym=3;
		else if(ch=='.')
			sym=4;
		else
			printf("");
	}
	state = a[state][sym];
	if(state=8)
		printf("실수입니다.");
	else
		printf("실수가아닙니다.");
	}
 
}