C 嵌套循环基础问题

[ffff7474774]

#include <stdio.h>

int main(void)
{
	const int ROWS = 6;
	const int CHARS = 6;
	int row;
	char ch;

	for (row = 0; row < ROWS; row++)
	{
		for (ch = ('A' + row); ch < ('A' + CHARS);ch++)
			printf("%c", ch);
		printf("\n");
	}

	return 0;
}

功能实现的是
ABCDEF
BCDEF
CDEF
DEF
EF
F

但是我想修改下，改成
A
AB
ABC
ABCD
ABCDE
ABCDEF
这种排练方式，我想了好几个方式都想不通，编译过去的都是乱码。希望大牛能贴出一下实现代码让我学习，谢谢！

[喜欢简单]

int main(void)
{
const int ROWS = 6;
const int CHARS = 6;
int row;
char ch;

for (row = 0; row < ROWS; row++)
{
for (ch = ('A'); ch < ('A' + row + 1);ch++)
printf("%c", ch);
printf("\n");
}

return 0;
}

[bluejays]

改一行即可
for (ch = 'A'; ch <= ('A' + row);ch++)

[ffff7474774]

天啦，加一个1 就行了，我竟然都想不出 哭~~~~！

[moorsf]

#include <stdio.h>

int main(void)
{
    const int ROWS = 6;
    const int CHARS = 6;
    int row;
    char ch;

    for (row = 0; row < ROWS; row++)
    {
        for (ch = ('A'); ch <= ('A' + row); ch++)
            printf("%c", ch);
        printf("\n");
    }

    return 0;
}