Zzulioj 1673: b: clever characters???

Problem description ：

Given a m That's ok n The character matrix of the column , Please fill in this matrix in alphabetical order .

Input ：

Enter two positive integers m,n.(m<=20,n<=20)

Output ：

Output the character matrix to be printed , Add before and after each line ‘>’ ‘<’（ Does not contain single quotes ）

The sample input ：

3 10

Sample output ：

>abcdefghij<
>klmnopqrst<
>uvwxyzabcd<

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Cause analysis ：

Handle character loops ： Can pass asc Code to achieve , namely (char)('a'+idx%26)

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Solution ：

#include<bits/stdc++.h>
using namespace std;
int main()
{
    int m,n,idx=0,i,j;
    cin>>m>>n;
    for(i=0;i<m;i++)
    {
        cout<<">";
        for(j=0;j<n;j++,idx++)
        {
            cout<<(char)('a'+idx%26);
        }
        cout<<"<"<<endl;
    }
    return 0;
}