数学表达式.c

阐述了breaking在C语言中的用法！

/* 1/(1-x)=1+x+x(2)+x(3)+........+X(n) */

#include <stdio.h>
#define LOOP 100
#define ACCURACY 0.0001

main()
{
	int n;
	float x,term,sum;

	printf("Input value of x:");
	scanf("%f",&x);
	sum=0;
	for(term=1,n=1;n<LOOP;++n)
	{
		sum+=term;
		if(term<=ACCURACY)
			goto output;
		term*=x;
	}
	printf("\nFINAL VALUE OF N IS NOT SUFFICIENT\n");
	printf("TO ACHIEVE DESIRED ACCURACY\n");
	goto end;
output:
	printf("\nEXIT FROM LOOP\n");
	printf("Sum = %f; No.of terms=%d\n",sum,n);
end:
	;
}