c语言中字符怎么输出在同一行（Dev-c++）

#include
#include
#include
int main (void)
{
int i=0,n;
char a[30]={0},ch;
printf("Enter message:");
do{
a[i]=toupper(ch=getchar());
i++;
}while (ch!='\n');
n=i;
printf("In B1FF-speak:");
for (i=0;i {
if (a[i]=='A')
a[i]='4';
else if (a[i]=='B')
a[i]='8';
else if (a[i]=='E')
a[i]='3';
else if (a[i]=='I')
a[i]='1';
else if (a[i]=='S')
a[i]='5';
printf("%c",a[i]);
}
printf("!!!!!!!!!!");
system ("pause");
return 0;
}