C programming Do while

Question

I just wrote this and i cant find problem. I work with codeblocks and it writing this problem

error: expected 'while' before '{' token
=== Build finished: 1 errors, 1 warnings)

But I cant wrote while there , because its not correct. Can someone help me please? Sorry for my eng.

printf("Put numbers for some reason\n");

int cislo;
int s0,s1,s2,s3,s4,s5,s6,s7,s8,s9;

while(scanf("%d",&cislo)==1){
   if (cislo<0)
      printf ("Cislo %d, je zaporne, takove neberu", cislo);
}

s0=s1=s2=s3=s4=s5=s6=s7=s8=s9=0;


do (cislo/10);
    {
    switch (cislo%10);

    case 0; ++s0;  break;
    case 1; ++s1;  break;
    case 2; ++s2;  break;
    case 3; ++s3;  break;
    case 4; ++s4;  break;
    case 5; ++s5;  break;
    case 6; ++s6;  break;
    case 7; ++s7;  break;
    case 8; ++s8;  break;
    case 9; ++s9;  break;
    }

 while (cislo>0);

 printf("0  %d x \n 1  %d x \n 2  %d x \n 3  %d x \n 4  %d x \n 5  %d x \n 6  %d x \n 7  %d x \n 8  %d x \n 9  %d x \n",s0,s1,s2,s3,s4,s5,s6,s7,s8,s9);

 return 0;
}

In the final it must print something like this:

100
Number: 100 include this numbers :
0 ...  2x
1 ...  1x
2 ...  0x
3 ...  0x
4 ...  0x
5 ...  0x
6 ...  0x
7 ...  0x
8 ...  0x
9 ...  0x

You have an extra ; on the line that starts with do and it should actually be while, not do. You are missing braces in the switch statement and have an extra ;. — Hristo Iliev
– Hristo Iliev, Commented Oct 19, 2012 at 18:33

Aniket Inge · Accepted Answer · 2012-10-19 18:33:58Z

1

do 
{
cislo /= 10;
switch (cislo%10);

case 0; ++s0;  break;
case 1; ++s1;  break;
case 2; ++s2;  break;
case 3; ++s3;  break;
case 4; ++s4;  break;
case 5; ++s5;  break;
case 6; ++s6;  break;
case 7; ++s7;  break;
case 8; ++s8;  break;
case 9; ++s9;  break;
}

while (cislo>0);

Try this?

answered Oct 19, 2012 at 18:33

Aniket Inge

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2 Comments

piratteegon Over a year ago

Ok guys, thank you very much for your answers! Now it works, not corectly for 100% but it works.

Aniket Inge Over a year ago

@user1760185 selecting an answer is Stack Overflow's method of saying "thank you" :-)

ouah · Accepted Answer · 2012-10-19 18:28:52Z

1

A do .. while statement has this form:

do statement while (expression)

In your example you have two statements:

(cislo/10);

and another compound statement { ... }. This does not make any sense.

answered Oct 19, 2012 at 18:28

ouah

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6 Comments

Ed Swangren Over a year ago

That's a semi-colon, not a comma :)

Aniket Inge Over a year ago

since when is do(statement){ }while() correct? It was do{ }while() IIRC?

ouah Over a year ago

@PrototypeStark (cislo/10); is actually a valid statement. It is called an expression statement:

Aniket Inge Over a year ago

@ouah I haven't ever seen anyone use it like that before. Is it in c99 or something? I have always seen do { statements } while(cond);

ouah Over a year ago

do statement while (expression) is right. { ... } is a statement also.

|

Zoneur · Accepted Answer · 2012-10-19 18:35:36Z

1

do (cislo/10); should be

do 
{ 
  /* your code */ 
} while (cislo/10);

Each case X; should be case X:.

As pointed by hexist, a switch is written like this:

switch (condition) {
  case X:
    /*something*/
    break;
}

edited Oct 19, 2012 at 18:35

answered Oct 19, 2012 at 18:29

Zoneur

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1 Comment

hexist Over a year ago

And there needs to be a brace enclosing the case statements .. ie switch (..) { and then the closing } at the end

Tsuneo Yoshioka · Accepted Answer · 2012-10-19 18:30:17Z

0

Remove ";" after do() .

do (cislo/10)
{
switch (cislo%10);

answered Oct 19, 2012 at 18:30

Tsuneo Yoshioka

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2 Comments

mcalex Over a year ago

but keep it after switch (cislo%10);?

Tsuneo Yoshioka Over a year ago

No, switch should be like switch(){case:...} . I feel it is better to read some C language book...

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