怎么样才能形成这样的图案

Question

怎么样才能形成这个图案，C语言的希望有人能解答，真的有点头大

Answer 1

 
#include <stdio.h>
int main()
{
    int a,b,c,n=0,x;
    char ch;
    printf("Please input capital:");
    scanf("%c", &ch);
    
    if(ch >='a' && ch <= 'z') n=ch-'a'+1;
    if(ch >='A' && ch <= 'Z') n=ch-'A'+1;
    if(n==0) return 0;
    for (a=1;a<=n;a++)
    {
        for (b=n-a;b>=1;b--)
            printf(" ");
        for (c=1;c<a*2;c++)
        {
            if(c<=a) x = c;
            else    x = 2*a-c;
            printf("%c",x-n+ch);
        }
        printf("\n");
    }
    return 0;
}