Poj 2800 vertical Histogram

Although this question is a question, it can make programmers realize how to convert characters and numbers.

In addition, we have a good understanding of the forward and backward orders of arrays.

Code:

 1 #include <stdio.h> 2 #include <string.h> 3 #include <ctype.h> 4 #define MAXN 350 5 char a[MAXN]; 6 char outp[2][2][10]={"  ","* "," ","*"}; 7 int main() 8 { 9     int i,j,max;10     int c[27];11     memset(c,0,sizeof(c));12     // input13     for(j = 0;j < 4;j ++)14     {    15         fgets(a,sizeof(a),stdin);16         for(i = 0;i < strlen(a);i ++)17             if(isalpha(a[i]))18                 c[a[i]-'A']++;19     }20     //printf("%d\n",c[0]);21     22     // find max23     max = c[0];24     for(i = 0;i < 26;i ++)25         if(c[i]>max)max = c[i];26 27     // printf28     for(i = 0;i < max;)29     {30         for(j = 0;j < 26;j ++)31         {32             if(c[j]<max)printf("%s",outp[j/25][0]);33             else printf("%s",outp[j/25][1]);34         }35         printf("\n");36         max--;37     }38     // output"ABC..."39     printf("A B C D E F G H I J K L M N O P Q R S T U V W X Y Z\n");40     return 0;41 }