Reverse Integer in Endless Loops












-2















Hey its OK to when i set value for integer but i dont want just reverse one i want reverse integer in a endless loop(infinite) so here is my code:



#include <stdio.h>
int main() {
int num = 2, preNum, digit;


while (1)
{
while (num > 0)
{
preNum = num;
digit = preNum % 10;
printf("%d", digit);
preNum /= 10;
}
num++;
}




getch();
return 0;
}


here is the wrong par ?










share|improve this question

























  • Your loop condition, num > 0, will cause the loop to execute until num overflows, which is undefined behavior.

    – Fiddling Bits
    Nov 21 '18 at 13:37













  • preNum /= 10; is pointless because you have preNum = num; at the beginning of the loop.

    – Fiddling Bits
    Nov 21 '18 at 13:39











  • ok thank you so much!

    – Code Junky
    Nov 21 '18 at 13:40
















-2















Hey its OK to when i set value for integer but i dont want just reverse one i want reverse integer in a endless loop(infinite) so here is my code:



#include <stdio.h>
int main() {
int num = 2, preNum, digit;


while (1)
{
while (num > 0)
{
preNum = num;
digit = preNum % 10;
printf("%d", digit);
preNum /= 10;
}
num++;
}




getch();
return 0;
}


here is the wrong par ?










share|improve this question

























  • Your loop condition, num > 0, will cause the loop to execute until num overflows, which is undefined behavior.

    – Fiddling Bits
    Nov 21 '18 at 13:37













  • preNum /= 10; is pointless because you have preNum = num; at the beginning of the loop.

    – Fiddling Bits
    Nov 21 '18 at 13:39











  • ok thank you so much!

    – Code Junky
    Nov 21 '18 at 13:40














-2












-2








-2








Hey its OK to when i set value for integer but i dont want just reverse one i want reverse integer in a endless loop(infinite) so here is my code:



#include <stdio.h>
int main() {
int num = 2, preNum, digit;


while (1)
{
while (num > 0)
{
preNum = num;
digit = preNum % 10;
printf("%d", digit);
preNum /= 10;
}
num++;
}




getch();
return 0;
}


here is the wrong par ?










share|improve this question
















Hey its OK to when i set value for integer but i dont want just reverse one i want reverse integer in a endless loop(infinite) so here is my code:



#include <stdio.h>
int main() {
int num = 2, preNum, digit;


while (1)
{
while (num > 0)
{
preNum = num;
digit = preNum % 10;
printf("%d", digit);
preNum /= 10;
}
num++;
}




getch();
return 0;
}


here is the wrong par ?







c integer reverse digits






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 21 '18 at 13:35









Fiddling Bits

7,11821938




7,11821938










asked Nov 21 '18 at 13:34









Code JunkyCode Junky

13




13













  • Your loop condition, num > 0, will cause the loop to execute until num overflows, which is undefined behavior.

    – Fiddling Bits
    Nov 21 '18 at 13:37













  • preNum /= 10; is pointless because you have preNum = num; at the beginning of the loop.

    – Fiddling Bits
    Nov 21 '18 at 13:39











  • ok thank you so much!

    – Code Junky
    Nov 21 '18 at 13:40



















  • Your loop condition, num > 0, will cause the loop to execute until num overflows, which is undefined behavior.

    – Fiddling Bits
    Nov 21 '18 at 13:37













  • preNum /= 10; is pointless because you have preNum = num; at the beginning of the loop.

    – Fiddling Bits
    Nov 21 '18 at 13:39











  • ok thank you so much!

    – Code Junky
    Nov 21 '18 at 13:40

















Your loop condition, num > 0, will cause the loop to execute until num overflows, which is undefined behavior.

– Fiddling Bits
Nov 21 '18 at 13:37







Your loop condition, num > 0, will cause the loop to execute until num overflows, which is undefined behavior.

– Fiddling Bits
Nov 21 '18 at 13:37















preNum /= 10; is pointless because you have preNum = num; at the beginning of the loop.

– Fiddling Bits
Nov 21 '18 at 13:39





preNum /= 10; is pointless because you have preNum = num; at the beginning of the loop.

– Fiddling Bits
Nov 21 '18 at 13:39













ok thank you so much!

– Code Junky
Nov 21 '18 at 13:40





ok thank you so much!

– Code Junky
Nov 21 '18 at 13:40












1 Answer
1






active

oldest

votes


















1














If I understand your question correctly, you need to change your code to something like this:



#include <stdio.h>

int main(void)
{
int num = 2, preNum, digit;

while (num < 100)
{
preNum = num;
printf("%d: ", preNum);
while(preNum)
{
digit = preNum % 10;
printf("%d", digit);
preNum /= 10;
}
printf("n");

num++;
}

return 0;
}


The following output is produced:




$ gcc main.c -o main.exe; ./main.exe
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
10: 01
11: 11
12: 21
13: 31
14: 41
15: 51
16: 61
17: 71
18: 81
19: 91
20: 02
...





share|improve this answer
























  • You are awesome bro THANK YOU

    – Code Junky
    Nov 21 '18 at 14:07











  • @CodeJunky Please check the accept button if this answers your question.

    – Barmak Shemirani
    Nov 22 '18 at 4:39











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









1














If I understand your question correctly, you need to change your code to something like this:



#include <stdio.h>

int main(void)
{
int num = 2, preNum, digit;

while (num < 100)
{
preNum = num;
printf("%d: ", preNum);
while(preNum)
{
digit = preNum % 10;
printf("%d", digit);
preNum /= 10;
}
printf("n");

num++;
}

return 0;
}


The following output is produced:




$ gcc main.c -o main.exe; ./main.exe
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
10: 01
11: 11
12: 21
13: 31
14: 41
15: 51
16: 61
17: 71
18: 81
19: 91
20: 02
...





share|improve this answer
























  • You are awesome bro THANK YOU

    – Code Junky
    Nov 21 '18 at 14:07











  • @CodeJunky Please check the accept button if this answers your question.

    – Barmak Shemirani
    Nov 22 '18 at 4:39
















1














If I understand your question correctly, you need to change your code to something like this:



#include <stdio.h>

int main(void)
{
int num = 2, preNum, digit;

while (num < 100)
{
preNum = num;
printf("%d: ", preNum);
while(preNum)
{
digit = preNum % 10;
printf("%d", digit);
preNum /= 10;
}
printf("n");

num++;
}

return 0;
}


The following output is produced:




$ gcc main.c -o main.exe; ./main.exe
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
10: 01
11: 11
12: 21
13: 31
14: 41
15: 51
16: 61
17: 71
18: 81
19: 91
20: 02
...





share|improve this answer
























  • You are awesome bro THANK YOU

    – Code Junky
    Nov 21 '18 at 14:07











  • @CodeJunky Please check the accept button if this answers your question.

    – Barmak Shemirani
    Nov 22 '18 at 4:39














1












1








1







If I understand your question correctly, you need to change your code to something like this:



#include <stdio.h>

int main(void)
{
int num = 2, preNum, digit;

while (num < 100)
{
preNum = num;
printf("%d: ", preNum);
while(preNum)
{
digit = preNum % 10;
printf("%d", digit);
preNum /= 10;
}
printf("n");

num++;
}

return 0;
}


The following output is produced:




$ gcc main.c -o main.exe; ./main.exe
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
10: 01
11: 11
12: 21
13: 31
14: 41
15: 51
16: 61
17: 71
18: 81
19: 91
20: 02
...





share|improve this answer













If I understand your question correctly, you need to change your code to something like this:



#include <stdio.h>

int main(void)
{
int num = 2, preNum, digit;

while (num < 100)
{
preNum = num;
printf("%d: ", preNum);
while(preNum)
{
digit = preNum % 10;
printf("%d", digit);
preNum /= 10;
}
printf("n");

num++;
}

return 0;
}


The following output is produced:




$ gcc main.c -o main.exe; ./main.exe
2: 2
3: 3
4: 4
5: 5
6: 6
7: 7
8: 8
9: 9
10: 01
11: 11
12: 21
13: 31
14: 41
15: 51
16: 61
17: 71
18: 81
19: 91
20: 02
...






share|improve this answer












share|improve this answer



share|improve this answer










answered Nov 21 '18 at 13:45









Fiddling BitsFiddling Bits

7,11821938




7,11821938













  • You are awesome bro THANK YOU

    – Code Junky
    Nov 21 '18 at 14:07











  • @CodeJunky Please check the accept button if this answers your question.

    – Barmak Shemirani
    Nov 22 '18 at 4:39



















  • You are awesome bro THANK YOU

    – Code Junky
    Nov 21 '18 at 14:07











  • @CodeJunky Please check the accept button if this answers your question.

    – Barmak Shemirani
    Nov 22 '18 at 4:39

















You are awesome bro THANK YOU

– Code Junky
Nov 21 '18 at 14:07





You are awesome bro THANK YOU

– Code Junky
Nov 21 '18 at 14:07













@CodeJunky Please check the accept button if this answers your question.

– Barmak Shemirani
Nov 22 '18 at 4:39





@CodeJunky Please check the accept button if this answers your question.

– Barmak Shemirani
Nov 22 '18 at 4:39




















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