1.右下角
#include<iostream>
#include<stdio.h>
#include<stdlib.h>
using namespace std;
int main(){
int n,b;
cin>>n;
b=n;
int a[n][n],i,j;
for(i=0;i<n;i++)
for(j=0;j<n;j++)cin>>a[i][j];
while(n>0){
for(i=0;i<b;i++){
for(j=0;j<b;j++){
if(j<n-1)
cout<<" ";
else cout<<a[i][j]<<" ";}
cout<<endl;
n=n-1;}
}
return 0;
}
2.左下角
#include<iostream>
using namespace std;
int main(){
int n,b;
cin>>n;
b=1;
int a[n][n],i,j;
for(i=0;i<n;i++)
for(j=0;j<n;j++)cin>>a[i][j];
while(b<n){
for(i=0;i<n;i++){
for(j=0;j<b;j++)cout<<a[i][j]<<" ";
cout<<endl;
b+=1;}
}
return 0;
}
3.左上角
#include<iostream>
#include<stdio.h>
#include<stdlib.h>
using namespace std;
int main(){
int n,b;
cin>>n;
b=n;
int a[n][n],i,j;
for(i=0;i<n;i++)
for(j=0;j<n;j++)cin>>a[i][j];
while(n>0){
for(i=0;i<b;i++){
for(j=0;j<n;j++)cout<<a[i][j]<<" ";
cout<<endl;
n=n-1;}
}
return 0;
}
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