!************************************************************************! !* Enunt: Sa se rezolve ecuatia de gradul II cu coeficienti constanti. *! !* Date de intrarea: a,b,c *! !* Date de iesire: x1,x2 *! !************************************************************************! program ec_gr_II implicit none !declaratii real a,b,c,dt,x1,x2,xr,xi character di !afisare titlu write(*,*) 'Rezolvarea ecuatiei de grad II cu coeficienti constanti: ax^2+bx+c=0' write(*,*) !date de intrare 10 continue write(*,*) 'Introduceti coeficientii constanti:' write(*,1) 1 format('a=',$) read(*,*) a write(*,2) 2 format('b=',$) read(*,*) b write(*,3) 3 format('c=',$) read(*,*) c !verificarea coeficientilor write(*,*) 'Coeficientii introdusi sunt:' write(*,*) 'a=',a write(*,*) 'b=',b write(*,*) 'c=',c write(*,*) 'Coeficientii au fost introdusi corect? [Y/N]' read (*,*) di !conditie pentru a relua introducerea coeficientilor if (di=='n' .or. di=='N') then go to 10 end if !conditie pentru delimitarea ecuatiilor de grad II !(daca a=0 atunci ecuatia define ecuatie de grad I) IF (a/=0.) then dt=b**2-4*a*c !delimitarea rezultatelor in functie de delta if (dt>0.) then write(*,*) 'Solutiile ecuatiei sunt:' x1=(-b+sqrt(dt))/(2*a) x2=(-b-sqrt(dt))/(2*a) write(*,*) 'x1=',x1 write(*,*) 'x2=',x2 else if (dt==0.) then write(*,*) 'Solutiile ecuatiei sunt egale, x1=x2:' x1=(-b)/(2*a) write(*,*) 'x=',x1 else if (dt