online java compile shows the error like this
static void isPrime (int n)
{ int f;
for(int i=2;i<=Math.sqrt(n);i++)
{
if(n % i == 0)
{
f = 1;
}
}
if(n == 1 || f == 1)
{
System.out.println("No");
}
else
System.out.println("Yes");
}
Compilation Error
Compilation Error:
prog.java:42: error: variable f might not have been initialized
if(n == 1 || f == 1)
^
1 error
java online-compilation
asked Nov 25 '18 at 12:52
Dhananjay GoreDhananjay Gore
21
add a comment |
static void isPrime (int n)
{ int f;
for(int i=2;i<=Math.sqrt(n);i++)
{
if(n % i == 0)
{
f = 1;
}
}
if(n == 1 || f == 1)
{
System.out.println("No");
}
else
System.out.println("Yes");
}
Compilation Error
Compilation Error:
prog.java:42: error: variable f might not have been initialized
if(n == 1 || f == 1)
^
1 error
java online-compilation
asked Nov 25 '18 at 12:52
Dhananjay GoreDhananjay Gore
21
3
Just changeint f;toint f = 0;
– Mark
Nov 25 '18 at 12:56
Simply writeint f = 0;before you use it.
– Glains
Nov 25 '18 at 12:56
that means java doesn't initializes with default value
– Dhananjay Gore
Nov 25 '18 at 13:20
add a comment |
static void isPrime (int n)
{ int f;
for(int i=2;i<=Math.sqrt(n);i++)
{
if(n % i == 0)
{
f = 1;
}
}
if(n == 1 || f == 1)
{
System.out.println("No");
}
else
System.out.println("Yes");
}
Compilation Error
Compilation Error:
prog.java:42: error: variable f might not have been initialized
if(n == 1 || f == 1)
^
1 error
java online-compilation
asked Nov 25 '18 at 12:52
Dhananjay GoreDhananjay Gore
21
static void isPrime (int n)
{ int f;
for(int i=2;i<=Math.sqrt(n);i++)
{
if(n % i == 0)
{
f = 1;
}
}
if(n == 1 || f == 1)
{
System.out.println("No");
}
else
System.out.println("Yes");
}
Compilation Error
Compilation Error:
prog.java:42: error: variable f might not have been initialized
if(n == 1 || f == 1)
^
1 error
java online-compilation
java online-compilation
asked Nov 25 '18 at 12:52
Dhananjay GoreDhananjay Gore
21
asked Nov 25 '18 at 12:52
Dhananjay GoreDhananjay Gore
21
asked Nov 25 '18 at 12:52
Dhananjay GoreDhananjay Gore
21
asked Nov 25 '18 at 12:52
Dhananjay GoreDhananjay Gore
21
asked Nov 25 '18 at 12:52
Dhananjay GoreDhananjay Gore
21
21
3
Just changeint f;toint f = 0;
– Mark
Nov 25 '18 at 12:56
Simply writeint f = 0;before you use it.
– Glains
Nov 25 '18 at 12:56
that means java doesn't initializes with default value
– Dhananjay Gore
Nov 25 '18 at 13:20
add a comment |
3
Just changeint f;toint f = 0;
– Mark
Nov 25 '18 at 12:56
Simply writeint f = 0;before you use it.
– Glains
Nov 25 '18 at 12:56
that means java doesn't initializes with default value
– Dhananjay Gore
Nov 25 '18 at 13:20
3
3
Just change
int f; to int f = 0;– Mark
Nov 25 '18 at 12:56
Just change
int f; to int f = 0;– Mark
Nov 25 '18 at 12:56
Simply write
int f = 0; before you use it.– Glains
Nov 25 '18 at 12:56
Simply write
int f = 0; before you use it.– Glains
Nov 25 '18 at 12:56
that means java doesn't initializes with default value
– Dhananjay Gore
Nov 25 '18 at 13:20
that means java doesn't initializes with default value
– Dhananjay Gore
Nov 25 '18 at 13:20
add a comment |
2 Answers
2
active
oldest
votes
In .NET integers and other value types always have default values. So in C# variable 'f' would have the default integer value of 0.
I guess Java is different... To get rid of this compile error, simply assign a value to f.
In example:
int f = 0;
answered Nov 25 '18 at 12:57
Ali Reza DehdarAli Reza Dehdar
708715
add a comment |
Just initialize it f to zero.
static void isPrime (int n) {
int f=0;
for(int i=2;i<=Math.sqrt(n);i++){
if(n % i == 0){
f = 1;
}
}
if(n == 1 || f == 1){
System.out.println("No");
}else
System.out.println("Yes");
}
answered Nov 25 '18 at 12:59
ThemelisThemelis
857518
add a comment |
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2 Answers
2
active
oldest
votes
2 Answers
2
active
oldest
votes
active
oldest
votes
active
oldest
votes
In .NET integers and other value types always have default values. So in C# variable 'f' would have the default integer value of 0.
I guess Java is different... To get rid of this compile error, simply assign a value to f.
In example:
int f = 0;
answered Nov 25 '18 at 12:57
Ali Reza DehdarAli Reza Dehdar
708715
add a comment |
In .NET integers and other value types always have default values. So in C# variable 'f' would have the default integer value of 0.
I guess Java is different... To get rid of this compile error, simply assign a value to f.
In example:
int f = 0;
answered Nov 25 '18 at 12:57
Ali Reza DehdarAli Reza Dehdar
708715
add a comment |
In .NET integers and other value types always have default values. So in C# variable 'f' would have the default integer value of 0.
I guess Java is different... To get rid of this compile error, simply assign a value to f.
In example:
int f = 0;
answered Nov 25 '18 at 12:57
Ali Reza DehdarAli Reza Dehdar
708715
In .NET integers and other value types always have default values. So in C# variable 'f' would have the default integer value of 0.
I guess Java is different... To get rid of this compile error, simply assign a value to f.
In example:
int f = 0;
answered Nov 25 '18 at 12:57
Ali Reza DehdarAli Reza Dehdar
708715
answered Nov 25 '18 at 12:57
Ali Reza DehdarAli Reza Dehdar
708715
answered Nov 25 '18 at 12:57
Ali Reza DehdarAli Reza Dehdar
708715
answered Nov 25 '18 at 12:57
Ali Reza DehdarAli Reza Dehdar
708715
708715
add a comment |
add a comment |
Just initialize it f to zero.
static void isPrime (int n) {
int f=0;
for(int i=2;i<=Math.sqrt(n);i++){
if(n % i == 0){
f = 1;
}
}
if(n == 1 || f == 1){
System.out.println("No");
}else
System.out.println("Yes");
}
answered Nov 25 '18 at 12:59
ThemelisThemelis
857518
add a comment |
Just initialize it f to zero.
static void isPrime (int n) {
int f=0;
for(int i=2;i<=Math.sqrt(n);i++){
if(n % i == 0){
f = 1;
}
}
if(n == 1 || f == 1){
System.out.println("No");
}else
System.out.println("Yes");
}
answered Nov 25 '18 at 12:59
ThemelisThemelis
857518
add a comment |
Just initialize it f to zero.
static void isPrime (int n) {
int f=0;
for(int i=2;i<=Math.sqrt(n);i++){
if(n % i == 0){
f = 1;
}
}
if(n == 1 || f == 1){
System.out.println("No");
}else
System.out.println("Yes");
}
answered Nov 25 '18 at 12:59
ThemelisThemelis
857518
Just initialize it f to zero.
static void isPrime (int n) {
int f=0;
for(int i=2;i<=Math.sqrt(n);i++){
if(n % i == 0){
f = 1;
}
}
if(n == 1 || f == 1){
System.out.println("No");
}else
System.out.println("Yes");
}
answered Nov 25 '18 at 12:59
ThemelisThemelis
857518
answered Nov 25 '18 at 12:59
ThemelisThemelis
857518
answered Nov 25 '18 at 12:59
ThemelisThemelis
857518
answered Nov 25 '18 at 12:59
ThemelisThemelis
857518
857518
add a comment |
add a comment |
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3
Just change
int f;toint f = 0;– Mark
Nov 25 '18 at 12:56
Simply write
int f = 0;before you use it.– Glains
Nov 25 '18 at 12:56
that means java doesn't initializes with default value
– Dhananjay Gore
Nov 25 '18 at 13:20