Question

c++问题error C2109: 下标要求数组或指针类型

#include<iostream>
#include<string>
using namespace std;
int main(void)
{
int a[4][4],b[4]={0,0,0,0},c[4]={0,1,2,3};
int d[4]={0,0,0,0,},e[4]={0,0,0,0,},f[4]={0,0,0,0};
int i,j,t,m,n,max1,max2;
string s[4]={"甲","乙","丙","丁",};
cout<<"请分别输入甲：乙,甲：丙,甲：丁,乙：丙,乙：丁,丙：丁"<<endl;
for(i=0;i<4;i++)
{for(j=i+1;j<4;j++)
{cout<<"输入"<<s[i]<<":"<<s[j]<<endl;
cin>>a[i][j]>>a[j][i];
if(a[i][j]>a[j][i])
b[i]=3+b[i];
else if(a[i][j]<a[j][i])
b[j]=b[j]+3;
else
{b[i]++;
b[j]++;}}}
for(i=0;i<=3;i++)
{for(j=0;j<=3;j++)
{if(j!=i)
{d[i]+=b[i][j]-b[j][i];
e[i]+=b[i][j];
}}}
max1=d[0];
for(i=1;i<=3;i++)
{if(d[i]>max1)
{max1=d[i];
m=i;}}
max2=f[0];
for(i=1;i<=3;i++)
{if(f[i]>max2)
{max2=f[i];
n=i;}}
for(i=0;i<4;i++)
{for(j=i+1;j<4;j++)
{
if(d[j]<d[0])
t=c[j];
c[j]=c[0];
c[0]=t;
}}
for(i=0;i<4;i++)
cout<<s[c[i]]<<b[c[i]]<<" "<<endl;
return 0;
}
一直显示error C2109: 下标要求数组或指针类型

Answer 1

#include<iostream>
#include<string>
using namespace std;
int main(void)
{
int a[4][4],b[4]={0,0,0,0},c[4]={0,1,2,3};
int d[4]={0,0,0,0,},e[4]={0,0,0,0,},f[4]={0,0,0,0};
int i,j,t,m,n,max1,max2;
string s[4]={"甲","乙","丙","丁",};
cout<<"请分别输入甲：乙,甲：丙,甲：丁,乙：丙,乙：丁,丙：丁"<<endl;
for(i=0;i<4;i++)
{
for(j=i+1;j<4;j++)
{
cout<<"输入"<<s[i]<<":"<<s[j]<<endl;
cin>>a[i][j]>>a[j][i];
if(a[i][j]>a[j][i])
b[i]=3+b[i];
else if(a[i][j]<a[j][i])
b[j]=b[j]+3;
else
{
b[i]++;
b[j]++;}
}
}
for(i=0;i<=3;i++)
{
for(j=0;j<=3;j++)
{
if(j!=i)
{
d[i]+=a[i][j]-a[j][i];
e[i]+=a[i][j];
}
}
}
max1=d[0];
for(i=1;i<=3;i++)
{
if(d[i]>max1)
{
max1=d[i];
m=i;
}
}
max2=f[0];
for(i=1;i<=3;i++)
{
if(f[i]>max2)
{
max2=f[i];
n=i;
}
}
for(i=0;i<4;i++)
{
for(j=i+1;j<4;j++)
{
if(d[j]<d[0])
t=c[j];
c[j]=c[0];
c[0]=t;
}
}
for(i=0;i<4;i++)
cout<<s[c[i]]<<b[c[i]]<<" "<<endl;
return 0;
}
下面的按个a写成b了
for(i=0;i<=3;i++)
{
for(j=0;j<=3;j++)
{
if(j!=i)
{
d[i]+=a[i][j]-a[j][i];
e[i]+=a[i][j];
}
}
}

Answer 2

b[4]={0,0,0,0} ---》b[i][j]
你自己定义的时候是一维，使用的时候却是二维的