题目内容

若运行以下程序时输入：2021<回车>,则程序的运行结果是。#include int main(){int year,leap;printf("enter year:");scanf("%d",&year);if((year%4==0 && year%100!=0) || (year%400==0))leap=1;elseleap=0;if (leap)printf("%d is ",year);elseprintf("%d is not ",year);printf("a leap year.\n");return 0;}

查看答案

搜索结果不匹配？点我反馈

更多问题

若运行以下程序时输入：1,2,1<回车>,则程序的运行结果是。#include #include int main(){double a,b,c,disc,x1,x2,realpart,imagpart;scanf("%lf,%lf,%lf",&a,&b,&c);printf("The equation ");if(fabs(a)<=1e-6)printf("is not a quadratic\n");else{disc=bb-4ac;if(fabs(disc)<=1e-6)printf("has two equal roots:%8.4f\n",-b/(2a));elseif(disc>1e-6){x1=(-b+sqrt(disc))/(2a);x2=(-b-sqrt(disc))/(2a);printf("has distinct real roots:%8.4f and %8.4f\n",x1,x2);}else{realpart=-b/(2a);imagpart=sqrt(-disc)/(2a);printf(" has complex roots:\n");printf("%8.4f+%8.4fi\n",realpart,imagpart);printf("%8.4f-%8.4fi\n",realpart,imagpart);}}return 0;}

若运行以下程序时输入：1,2,2<回车>,则程序的运行结果是。#include #include int main(){double a,b,c,disc,x1,x2,realpart,imagpart;scanf("%lf,%lf,%lf",&a,&b,&c);printf("The equation ");if(fabs(a)<=1e-6)printf("is not a quadratic\n");else{disc=bb-4ac;if(fabs(disc)<=1e-6)printf("has two equal roots:%8.4f\n",-b/(2a));elseif(disc>1e-6){x1=(-b+sqrt(disc))/(2a);x2=(-b-sqrt(disc))/(2a);printf("has distinct real roots:%8.4f and %8.4f\n",x1,x2);}else{realpart=-b/(2a);imagpart=sqrt(-disc)/(2a);printf(" has complex roots:\n");printf("%8.4f+%8.4fi\n",realpart,imagpart);printf("%8.4f-%8.4fi\n",realpart,imagpart);}}return 0;}

若运行以下程序时输入：2,6,1<回车>,则程序的运行结果是。#include #include int main(){double a,b,c,disc,x1,x2,realpart,imagpart;scanf("%lf,%lf,%lf",&a,&b,&c);printf("The equation ");if(fabs(a)<=1e-6)printf("is not a quadratic\n");else{disc=bb-4ac;if(fabs(disc)<=1e-6)printf("has two equal roots:%8.4f\n",-b/(2a));elseif(disc>1e-6){x1=(-b+sqrt(disc))/(2a);x2=(-b-sqrt(disc))/(2a);printf("has distinct real roots:%8.4f and %8.4f\n",x1,x2);}else{realpart=-b/(2a);imagpart=sqrt(-disc)/(2a);printf(" has complex roots:\n");printf("%8.4f+%8.4fi\n",realpart,imagpart);printf("%8.4f-%8.4fi\n",realpart,imagpart);}}return 0;}

若运行以下程序时输入：100,20,300<回车>,则程序的运行结果是。#include int main(){int c,s;float p,w,d,f;printf("please enter price,weight,discount:");scanf("%f,%f,%d",&p,&w,&s);if(s>=3000)c=12;elsec=s/250;switch(c){case 0: d=0; break;case 1: d=2; break;case 2:case 3: d=5; break;case 4:case 5:case 6:case 7: d=8; break;case 8:case 9:case 10:case 11: d=10; break;case 12: d=15; break;}f = p * w * s * (1 - d / 100);printf("freight=%10.2f\n",f);return 0;}