急需请教C语言高手解惑！！！！！

//金字塔程序

#include<stdio.h>
int main(void)
{
const int ROW=4;
int row;
char Up_CASE;
char ch;
printf("Please input a upper case: "); //提示输入一个大写字母
scanf("%c",&Up_CASE);
for(row=0;row<ROW;row++)
{
for(row=0;row<ROW;row++)
{
printf(" ");
}

for(ch=('Up_CASE'-ROW);('Up_CASE'-ch)>=row;ch--)
printf("%c",ch);

for(row=0;row<=ROW;row++)
for(ch=('Up_CASE'-(ROW-row));('Up_CASE'-(ROW-row))>ch;ch--)
if(row=0)
printf("\n");
else
{
printf("%c",ch);
printf("\n");
}
}

return 0;
}

为什么会出现：error C2015: too many characters in constant？？？怎么解决？？？