i have a doubt.its about a pgm on polynomial addition.the q is that the poly nomial should be read as nos followed by spaces and terminated by -1-1eg 1 2 1 3 -1-1means1x2+1x3.max no of terms is 15.i have done ythe following pgm to do this
during exe i am not able to the second scanf for 'b'.why is it so?Code:for(i=0,j=0;j<15;j++) { scanf("%d",&a[i][j]); if((a[i][j]==-1)&&(a[i][j--]==-1)) break; } for(m=0,n=0;n<15;n++) { scanf("%d",&b[m][n]); if((b[m][n]==-1)&&(b[m][n--]==-1)) break; }
Last edited by smitha; 09-16-2005 at 08:26 PM. Reason: spell check
Clear stdin before the second call to scanf().
may i know how?
Read the FAQ perhaps?
http://faq.cprogramming.com/cgi-bin/...&id=1043284392
> during exe i am not able to the second scanf for 'b'.why is it so?
Because you're not reading in pairs of numbers (despite your use of 2D arrays)
scanf("%d",&a[i][j]);
Consumes the first -1 and exits the first loop
scanf("%d",&b[m][n]);
Consumes the second -1 and exits the second loop (without apparently doing anything)
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
If at first you don't succeed, try writing your phone number on the exam paper.
for polynomial addition,using stack is also an option.
regards
varun
