11.16 實驗三(任務1,2)
阿新 • • 發佈:2020-11-16
#include<math.h> #include<stdio.h> int main(){ float a,b,c,x1,x2; float delta,real,imag; printf("Enter a,b,c:"); while(scanf("%f%f%f",&a,&b,&c)!=EOF) { if(a==0) printf("不是二元方程.\n\n"); else{ delta=b*b-4*a*c; if(delta>=0){ x1=(-b+sqrt(delta))/(2*a); x1=(-b-sqrt(delta))/(2*a); printf("x1=%.2f,x2=%.2f\n\n",x1,x2); } else{ real=-b/(2*a); imag=sqrt(-delta)/(2*a); printf("x1=%.2f+%.2fi,x2=%.2f-%.2fi\n\n",real,imag,real,imag); } } printf("Enter,a,b,c"); } return 0; }
#include<stdio.h> #include <stdlib.h> #include <time.h> #define N 5 int main() { int x, n; srand(time(0)); n = 0; do { n++; x= rand()%10; printf("%3d", x); } while(n<N); printf("\n"); return 0; }