本人刚学java两天 编了个程序不知错在哪 帮忙解决下谢谢
public class Xiti5
{
public static void main (String args[]){
int sum=0,i=0;
System.out.println("计算1!+2!+3!+4!+5!+..的前10和前5项项之差:"+sum);
sum=(int)q(i)+(int)r(i);
}
}class Xiti5_b
{
public static void main (String args[]){
System.out.println("计算1!+2!+3!+4!+5!+..的前5项之和:"+q(5));
}
public static int q(int n)
{
int m=0;
for(int i =1;i<=n;i++){
m=(int)method(i)+m;
}
return m;
}
public static int method(int n){
if (n!=1){
int method=0;
method=(int)n*method(n-1);
return method;
}
else
{return 1;}
}}
class Xiti5_a
{
public static void main (String args[]){
System.out.println("计算1!+2!+3!+4!+5!+..的前10项之和:"+r(10));
}
public static int r(int n)
{
int m=0;
for(int i =1;i<=n;i++){
m=(int)method(i)+m;
}
return m;
}
public static int method(int n){
if (n!=1){
int method=0;
method=(int)n*method(n-1);
return method;
}
else
{return 1;}
}}
编译时出现的错误是:Xiti5.java:6: cannot find symbol
sum=(int)q(i)+(int)r(i);
^
symbol: 方法 q(int)
location: 类 Xiti5
Xiti5.java:6: cannot find symbol
sum=(int)q(i)+(int)r(i);
^
symbol: 方法 r(int)
location: 类 Xiti5
2 错误
public class Xiti5
{
public static void main (String args[]){
int sum=0,i=0;
System.out.println("计算1!+2!+3!+4!+5!+..的前10和前5项项之差:"+sum);
sum=(int)q(i)+(int)r(i);
}
}class Xiti5_b
{
public static void main (String args[]){
System.out.println("计算1!+2!+3!+4!+5!+..的前5项之和:"+q(5));
}
public static int q(int n)
{
int m=0;
for(int i =1;i<=n;i++){
m=(int)method(i)+m;
}
return m;
}
public static int method(int n){
if (n!=1){
int method=0;
method=(int)n*method(n-1);
return method;
}
else
{return 1;}
}}
class Xiti5_a
{
public static void main (String args[]){
System.out.println("计算1!+2!+3!+4!+5!+..的前10项之和:"+r(10));
}
public static int r(int n)
{
int m=0;
for(int i =1;i<=n;i++){
m=(int)method(i)+m;
}
return m;
}
public static int method(int n){
if (n!=1){
int method=0;
method=(int)n*method(n-1);
return method;
}
else
{return 1;}
}}
编译时出现的错误是:Xiti5.java:6: cannot find symbol
sum=(int)q(i)+(int)r(i);
^
symbol: 方法 q(int)
location: 类 Xiti5
Xiti5.java:6: cannot find symbol
sum=(int)q(i)+(int)r(i);
^
symbol: 方法 r(int)
location: 类 Xiti5
2 错误
public class Xiti5 {
public static void main(String args[]) {
int sum = 0, i = 0;
sum = (int) q(i) + (int) r(i);
System.out.println("计算1!+2!+3!+4!+5!+..的前10和前5项项之差:" + sum);
System.out.println("计算1!+2!+3!+4!+5!+..的前5项之和:" + q(5));
System.out.println("计算1!+2!+3!+4!+5!+..的前10项之和:" + r(10));
}
public static int q(int n) {
int m = 0;
for (int i = 1; i <= n; i++) {
m = (int) method(i) + m;
}
return m;
}
public static int method(int n) {
if (n != 1) {
int method = 0;
method = (int) n * method(n - 1);
return method;
} else {
return 1;
}
}
public static int r(int n) {
int m = 0;
for (int i = 1; i <= n; i++) {
m = (int) method(i) + m;
}
return m;
}
}
因为q(i)方法是其他类的,Xiti5没有那个方法。
r(i)一样的。
public class Xiti5 {
public static void main(String args[]) {
int sum = 0, i = 0;
sum = (int)Xiti5_b. q(i) + (int)Xiti5_a. r(i);
System.out.println("计算1!+2!+3!+4!+5!+..的前10和前5项项之差:" + sum);
}
}class Xiti5_b {
public static void main(String args[]) {
System.out.println("计算1!+2!+3!+4!+5!+..的前5项之和:" + q(5));
} public static int q(int n) {
int m = 0;
for (int i = 1; i <= n; i++) {
m = (int) method(i) + m;
}
return m;
} public static int method(int n) {
if (n != 1) {
int method = 0;
method = (int) n * method(n - 1);
return method;
} else {
return 1;
}
}}class Xiti5_a {
public static void main(String args[]) {
System.out.println("计算1!+2!+3!+4!+5!+..的前10项之和:" + r(10));
} public static int r(int n) {
int m = 0;
for (int i = 1; i <= n; i++) {
m = (int) method(i) + m;
}
return m;
} public static int method(int n) {
if (n != 1) {
int method = 0;
method = (int) n * method(n - 1);
return method;
} else {
return 1;
}
}}