Thread: Could'nt Terminate the Command Smoothly when Wrong type of input is given?PleaseHelp

Code:

main()
{
double a=0,b=1,p=0,m,t=0;
clrscr();
printf("\n\n\n\n\n\n\n    Give Number of Desired Terms In Fibonacci Series : ");
scanf("%lf",&m);
do{
a=0,b=1,t=0,p=0;
printf("\n    ");
do{
t=a+b;
printf("%.0lf    ",t);
b=a;
a=t;
p++;
}while(p!=m);
printf("\n\n    Give Number of Desired Terms In Fibonacci Series : ");
scanf("%lf",&m);
}while(m!=0);<<Could'nt terminate loop smoothly for 
                  <<Non numeric input
getch();
}

Scanf() is notoriously buggy with non-numerical input. If you really insist on using it, you could always fgets() to strtoul()/strtod().

But you don't need to do any of that do/while looping for a simple fibonacci. Here's an array-based partial example that you might want to study:

Code:

array[0] = 0;
array[1] = 1;

for (i = 0; i < len; i++) {
    array[i] = array[i-1] + array[i-2];
}

Now, make it work.