摘要：
#include#includeint main(void){ int a,b,c; double m; scanf("%d%d%d",&a,&b,&c); while((a!=0)&&(b!=0)&&(c!=0)){ if(a==0){ printf("Error!");} m=b*b*1.0-4*a*c; if(m>0) printf("x1=%lf \n x2=%lf",(-b+sqrt(m)*1.0)/(2*a),(-b-sqrt(m)*1.0)/(2*a)); e 阅读全文
摘要：
#include#includeint main(void){ int denominator,flag,n; double item,pi; flag=1; denominator=1; item=1.0; pi=0;scanf("%d",&n);if(n8)printf("error");while(n!=0){ while(fabs(item)>=pow(10,-n)){ item=flag*1.0/denominator; pi=pi+item; flag=-flag; denominator=denominator+2;}pi=p 阅读全文