此程序实现一个一维数组所有个元素的乘积,错在哪？

[haoahoxueJAVA]

此程序实现一个一维数组所有个元素的乘积
public class M
{
int []a={1,2,3,4,5,};
int b=0,c=0;
public static void main(String [] args)
{
for(int i=0;i<a.length;i++)
{
b=a[i];
c=a[i]*a[i+1];
b=c;
}
System.out.println(c);
}
}

运行时报错，请高手指点，错在哪？

[haoahoxueJAVA]

报错如下：


---------- Compile Java Program ----------
M.java:7: non-static variable a cannot be referenced from a static context
for(int i=0;i<a.length;i++)
^
M.java:9: non-static variable b cannot be referenced from a static context
b=a[i];
^
M.java:9: non-static variable a cannot be referenced from a static context
b=a[i];
^
M.java:10: non-static variable c cannot be referenced from a static context
c=a[i]*a[i+1];
^
M.java:10: non-static variable a cannot be referenced from a static context
c=a[i]*a[i+1];
^
M.java:10: non-static variable a cannot be referenced from a static context
c=a[i]*a[i+1];
^
M.java:11: non-static variable b cannot be referenced from a static context
b=c;
^
M.java:11: non-static variable c cannot be referenced from a static context
b=c;
^
M.java:13: non-static variable c cannot be referenced from a static context
System.out.println(c);
^
9 errors

输出完成 (耗时 5 秒) - 正常终止

[yaray]

int []a={1,2,3,4,5,};

-->
int []a={1,2,3,4,5};

[yaray]

静态方法不允许访问非静态变量!

[Leemaasn]

Y

[yaray]

public class M
{
int []a={1,2,3,4,5,};
int b=0,c=0;
public static void main(String [] args)
{
M m = new M();
for(int i=0;i<m.a.length;i++)
{
m.b=m.a[i];
m.c=m.a[i]*a[i+1];
m.b=m.c;
}
System.out.println(m.c);
}
}

[yaray]

//格式对齐了一下:
public class M
{
int []a={1,2,3,4,5};
int b=0,c=0; //潜在问题: 数据长度溢出
public static void main(String [] args)
{
M m = new M();
for(int i=0;i<m.a.length;i++)
{
m.b=m.a[i];
m.c=m.a[i]*a[i+1];
m.b=m.c;
}
System.out.println(m.c);
}
}

[jFresH_MaN]

public class M
{
int []a={1,2,3,4,5};
int b=0,c=0; //潜在问题: 数据长度溢出
public static void main(String [] args)
{
M m = new M();
int sum=1;
for(int i=0;i<m.a.length;i++)
{
sum *=m.a[i];
}
System.out.println(sum);
}
}

[ChDw]

而且这个程序不就是算一个乘积吗？怎么这么复杂！

static int []a={1,2,3,4,5};
public static void main(String[] args) throws Exception {
int result = 1;
for(int i=0;i<a.length;i++)
{
result *= a[i];
}
System.out.println(result);

[classjava]

import java.util.*;

public class M
{
static int []a={1,2,3,4,5,};
static int b=0,c=0;
public static void main(String [] args)
{
for(int i=0;i<a.length;i++)
{
b=a[i];
if(i+1<a.length)
{ c=a[i]*a[i+1];
b=c;
System.out.println(c);
}
}
}
}

[Chinatosun]

public class M
{
static int []a={1,2,3,4,5};
int c;
public static void main(String [] args){
M m = new M();
if(m.a.length>0){
m.c=m.a[0];
}
for(int i=1;i<m.a.length;i++){
m.c=m.c*a[i];
}
System.out.println(m.c);
}
}

[Chinatosun]

public class M
{
static int []a={1,2,3,4,5};
static int c;
public static void main(String [] args){
if(a.length>0){
c=a[0];
}
for(int i=1;i<a.length;i++){
c=c*a[i];
}
System.out.println(c);
}
}