loop using strcmp()

[Denster]

I am doing an assignment that requires two input files to be read a record at a time. the loop can only terminate when both codes read "99999". The code I have should produce an infinite loop but ignores the second value.

#include <stdio.h>
#include <string.h>

void main()
{
char a[] = &quot;00000&quot;,*a_ptr;
char b[] = &quot;00000&quot;,*b_ptr;
while((strcmp(a,&quot;99999&quot!=0)&&(strcmp(b,&quot;99999&quot!=0))
{
/* rest of the coding will go here */
strcpy(a,&quot;99999&quot;
strcpy(b,&quot;99990&quot;
}
}

 

[Zyrenthian]

because of the && when strcmp(a,&quot;99999&quot is met it stops

I dont know what you are trying to test but this is the reason why it is not infinte.

Matt

 

[Denster]

yes I know this is the reason but what is the solution?. I need to exit the loop when both a & b are equal to 99999.

 

[Zyrenthian]

Oh sorry

here ya go

while( !(!strcmp(a,&quot;99999&quot && !strcmp(b,&quot;99999&quot) )


btw. I'm sorry but I look at things differently. This could be rewritten as strcmp(...) == 0. Also note that I used the ! again to fix up the problem.

Matt

 

[Denster]

thats it! I've put it into my main prog and it works perfectly. Thanks for the info.



Dennis