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Код: Выделить всё

#include <stdio.h>
#include <conio.h>

void main()
{
		double step,begin,end,a,b,c,x,f;

		printf("\nEnter a,b,c,step,begin and end:\n");
		scanf("%lf%lf%lf%lf%lf%lf",&a,&b,&c,&step,&begin,&end);
		printf("\n%lf %lf %lf %lf %lf %lf\n",a,b,c,step,begin,end);
		printf("\n");

		if((a<0)&&(c!=0))
		for(begin;begin<=end;begin+=step)
		{
			x=begin;
			f=(a*x*x)+(b*x)+c;
			printf("\nX: %lf, F: %lf",x,f);
			
		}
		else
			if(a>0)
			{	
				for(begin;begin<=end;begin+=step)
				{
					x=begin;
					if((x-c)==0) printf("\nX: %lf, F: Error!",x);
					else
					{
						f=(a*=-1)/(x-c);
						printf("\nX: %lf, F: %lf",x,f);
				
					};
				};
			}
			else
				for(begin;begin<=end;begin+=step)
				{
					x=begin;
					f=a*(x+c);
					printf("\nX: %lf, F: %lf",x,f);
			
				};
		printf("\n");
		getch();
}