pls help urgently

**rickyspaceguy** · 09-25-2009

Code:

#include<stdio.h>

/* program to calculate no of tabs,spaces,tabs alongwith characters */

int main(){
int c;
int nc,nspc,ntb,nline;

nc=nspc=ntb=nline=0;
c='\0';

while((c=getchar())!=EOF){
++nc;

if(c == ' ')
++nspc;
else if(c=='\t')
++ntb;
else if(c=='\n')
++nline;
else;
}

printf("\ncharacters:%d\tspace:%d\ttabs:%d\tNewlines:%d\t",nc,nspc,ntb,nline);
return 0;
}

i can't find the bug here..i've used a MinGW gcc compiler on a windows machine..

the program compiles correctly...i give it ctrl+c as a end of file indicator..

the programs runs fine the first time..but start giving problems..after wards..sometimes the second last (printf) statement is not executed @ ctrl+c combination...
other times the printf statement contains all 0 zero values ..pls help

**Adak** · 09-25-2009

Originally Posted by rickyspaceguy

Code:

#include<stdio.h>

/* program to calculate no of tabs,spaces,tabs alongwith characters */

int main(){
int c;
int nc,nspc,ntb,nline;

nc=nspc=ntb=nline=0;
c='\0';

while((c=getchar())!='EOF'){
++nc;

if(c == ' ')
++nspc;
else if(c=='\t')
++ntb;
else if(c=='\n')
++nline;
else;
}

printf("\ncharacters:%d\tspace:%d\ttabs:%d\tNewlines:%d\t",nc,nspc,ntb,nline);
return 0;
}

i can't find the bug here..i've used a MinGW gcc compiler on a windows machine..

the program compiles correctly...i give it ctrl+c as a end of file indicator..

the programs runs fine the first time..but start giving problems..after wards..sometimes the second last (printf) statement is not executed @ ctrl+c combination...
other times the printf statement contains all 0 zero values ..pls help

EOF is just EOF, not 'EOF'. No idea if there is a difference, however.

ctrl+z is an EOF char for DOS and Windows, rather than ctrl+c.

Your program doesn't have any loops, so I don't understand what you mean by "starts giving problems...after wards". Afterwards, it simply quits and you have to run it anew.

It's a very small program, but please get in the habit of indenting your code, straight away.

**MK27** · 09-25-2009

Try putting this after the printf:

Code:

fflush(stdout);

**abachler** · 09-25-2009

Originally Posted by rickyspaceguy

snip non-indented code

i can't find the bug here..i've used a MinGW gcc compiler on a windows machine..

the program compiles correctly...i give it ctrl+c as a end of file indicator..

the programs runs fine the first time..but start giving problems..after wards..sometimes the second last (printf) statement is not executed @ ctrl+c combination...
other times the printf statement contains all 0 zero values ..pls help

'EOF' means literally the letters E O and F, not end of file, which is just the macro EOF, and as others have stated, please indent your code, its barely readable

**Kennedy** · 09-25-2009

Originally Posted by abachler

'EOF' means literally the letters E O and F, not end of file, which is just the macro EOF, and as others have stated, please indent your code, its barely readable

Shouldn't 'EOF' generate some type of compiler error (or at least a warning) as '' is reserved for char and "" is for string. . . is it not so?

**abachler** · 09-25-2009

Originally Posted by Kennedy

Shouldn't 'EOF' generate some type of compiler error (or at least a warning) as '' is reserved for char and "" is for string. . . is it not so?

nein, der preprocessor converts direct string entries into pointers prior to compilation, so the compiler will get a pointer to a string containing 'EOF'. A pointer to a string adn a pointer to a char both have the same type (char*).

**Sebastiani** · 09-25-2009

Und warum jetzt sprechen wir Deutsch, Abachler?

**Adak** · 09-25-2009

Originally Posted by Kennedy

Shouldn't 'EOF' generate some type of compiler error (or at least a warning) as '' is reserved for char and "" is for string. . . is it not so?

I thought 'EOF' would generate an error, also.

It does not.

Thanks for the why, Abachler.

**tabstop** · 09-25-2009

Man braucht nie einen Grund, Deutsch zum sprechen. And 'EOF' is not a pointer, of course, but a character constant, the exact value of which depends on your compiler, but is probably the values of 'E' and 'O' and 'F' concatenated together along with a warning about a multi-character constant.

**rickyspaceguy** · 09-26-2009

look people...i've mistakenly copied EOF as 'EOF' i had already detected & tried to edit b4 ne1 replied..but i don't know why wasn't it updated..

others who say tht y haven't i used Ctrl+z as EOF..is bcoz my friend my m/c doesn't accept ctrl+z as EOF..it accepts ctrl+c..i donno y is this happening

neways let me see if fflush works....

**rickyspaceguy** · 09-26-2009

fflush doesnt help too same problems....

**tabstop** · 09-26-2009

Originally Posted by rickyspaceguy

look people...i've mistakenly copied EOF as 'EOF' i had already detected & tried to edit b4 ne1 replied..but i don't know why wasn't it updated..

others who say tht y haven't i used Ctrl+z as EOF..is bcoz my friend my m/c doesn't accept ctrl+z as EOF..it accepts ctrl+c..i donno y is this happening

neways let me see if fflush works....

Ctrl-C sends an interrupt signal, which stops everything. It is not EOF. EOF is Ctrl-Z on Windows systems, Ctrl-D on unixy systems.

**rickyspaceguy** · 09-26-2009

Originally Posted by Adak

EOF is just EOF, not 'EOF'. No idea if there is a difference, however.

ctrl+z is an EOF char for DOS and Windows, rather than ctrl+c.

Your program doesn't have any loops, so I don't understand what you mean by "starts giving problems...after wards". Afterwards, it simply quits and you have to run it anew.

It's a very small program, but please get in the habit of indenting your code, straight away.

my program doesnt have loops...?? thr is a while loop sitting..

**rickyspaceguy** · 09-26-2009

Originally Posted by tabstop

Ctrl-C sends an interrupt signal, which stops everything. It is not EOF. EOF is Ctrl-Z on Windows systems, Ctrl-D on unixy systems.

i already know tht bud..can u compile the code then try to run it...but do tell me if u used unix or windows m/c

**Adak** · 09-26-2009

Of course it has ONE loop, but it doesn't have the logic or loops that would enable it to take in another line of text, without re-starting it.

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pls help urgently

i'm very sorry

fflush doesnt help

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