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Khong ton tai thoi gian t vi pt Vo nghiem ";.[r]
(1)BÀI TẬP LẬP TRÌNH Bài 1: #include <stdio.h> #include <conio.h> main() { int n,i; printf("\nCHUONG TRINH IN DAY SO"); printf("\nNhap vao so n"); scanf("%d",&n); for ((i=1);(i<=n);(++i)) { printf("\nSo hang thu %d: %d",i,i); } getch(); } Bài 2: #include <stdio.h> #include <conio.h> main() { int n,i,tong; (2) printf("Nhap vao so n "); scanf("%d",&n); tong = i =0; nhan : { tong += i; i++; if(i<n) printf(" %d +",i); } if (i<=n) goto nhan; printf(" %d = %d",n,tong); getch(); } Bài 3: #include <stdio.h> #include <conio.h> main() { int n,i,tong; printf("Nhap vao so n "); scanf("%d",&n); printf("So chan tu %d toi la: ",n); (3) for (int i=n; i>=0;i ) { if (i%2 ==0) printf(" %d ;",i); } getch(); } Bài 4: #include <stdio.h> #include <conio.h> main() { int nam,a; printf("Nhap nam bat ky "); scanf("%d",&nam); a = nam%4; if(a==1) printf("Nam nhuan gan nhat la %d",nam -1); else if(a==3) printf("Nam nhuan ga nhat la %d",nam +1); else if(a==2) printf("Nam nhuan la nam %d hoac %d",nam-2, nam+2); else printf("\nDay la nam nhuan"); getch(); } (4) Bài 5: #include <stdio.h> #include <conio.h> #include <string.h> main() { char a[15]; char b[15]; printf(“\NCHUONG TRINH NHAP MAT KHAU”); printf("\nNhap vao mat khau: "); scanf("%s",&a); tt: printf("\nNhap lai mat khau: "); scanf("%s",&b); if (strcmp(a,b)!=0) { printf("Ban da nhap sai mat khau"); goto tt; } else printf("Ban da nhap dung mat khau"); getch(); } (5) Bài 6: #include <stdio.h> #include <conio.h> main() { int tong,n,i; printf("Nhap vao so n "); scanf("%d",&n); tong = i = 0; for (i=1;i<=n;i++) { tong =tong + (i*i); if (i<n) printf("%d^2 + ",i); } printf("%d^2 = %d",n,tong); getch(); } Bài 7: #include <stdio.h> #include <conio.h> main() { (6) float L, C, w,Z1,Z2; printf("\nCHUONG TINH TINH CAM KHANG VA DUNG KHANG"); printf("\nNhap vao tu cam cua cuon day: "); scanf("%f",&L); printf("\nNhap vao dien dung cua tu dien: "); scanf("%f",&C); printf("\nNhap vao tan so cua mach: "); scanf("%f",&w); Z1=L*w; Z2=1/(w*C); printf("\nCam khang cua mach: %0.5f",Z1); printf("\nDien dung cua mach: %0.5f",Z2); getch(); } Bài 8: #include <stdio.h> #include <conio.h> #include <math.h> main() { float L, C, f,pi=3.14; printf("\nCHUONG TINH TAN SO CONG HUONG"); printf("\nNhap vao tu cam cua cuon day: "); (7) scanf("%f",&L); printf("\nNhap vao dien dung cua tu dien: "); scanf("%f",&C); f=1/(2*pi*sqrt(L*C)); printf("\nTan so cua mach la: %0.3f",f); getch(); } Bài 9: #include <stdio.h> #include <conio.h> #include <math.h> main() { float e,f; int a,b,c,d; printf("Nhap vao chi so dien dung cua tu\n "); printf("\nQuy uoc 103 = 10*10^3 pF = "); scanf("%d",&a); b= a%10; c= a/10; d= c*pow(10,b); e= d*pow(10,-3); (8) f= e*pow(10,-3); printf("Don vi pF = %d pF \n",d); printf("Don vi nF = %.8f nF \n",e); printf("Don vi uF = %.8f uF \n",f); getch(); } Bài 10: #include <stdio.h> #include <conio.h> #include <math.h> main() { float x,v,a; printf("Nhap vao x0 \n"); scanf("%f",&x); printf("Nhap vao v0 \n"); scanf("%f",&v); printf("Nhap vao a \n"); scanf("%f",&a); (9) if ( v/1 != && a == 0) { printf("Chuyen dong thang deu \n"); printf("Phuong trinh chuyen dong thang deu la \n"); printf("\n x = %.2f + %.2f*t ",x,v); } else if (a/1 != && a < 0) { printf("Chuyen dong thang cham dan deu \n"); printf("Phuong trinh chuyen dong cham dan deu la \n"); printf("\n x = %.2f + %.2f*t + 1/2*(%.2f)*t^2 ",x,v,a); } else if (a/1 != && a > 0) { printf("Chuyen dong thang nhanh dan deu "); printf("\nPhuong trinh chuyen dong nhanh dan deu la \n"); printf("\n x = %.2f + %.2f*t + 1/2*(%.2f)*t^2 ",x,v,a); } float x1,delta,t1,t2,t; printf("\n"); printf("\n Nhap vao toa x >= x0 = "); (10) scanf("%f",&x1); delta = (v*v) - (4*0.5*a*(x-x1)); //printf("Delta %.2f \n",delta); if (delta >0) { t1 = (-v) + (sqrt(delta)/a); t2 = (-v) - (sqrt(delta)/a); printf("%.2f \n",t1); printf("%.2f \n",t2); if (t1*t2 >= && t1+t2 >0) printf("\n Thoi gian la %d hoac ",t1, t2); else if(t1*t2 >= && t1+t2 <0) printf("\n vi la so am "); Khong ton tai thoi gian t else if(t1*t2 <= && t1>0) printf("\n Thoi gian la %f ",t1); else printf("\nThoi gian la %f ",t2); } else if (delta == 0) { t = -v/a; if (t > 0) printf("\n Thoi gian la %.2f",t); else printf("\n Thoi gian khong ton tai vi la so am "); } else if (delta < 0) printf("\n Khong ton tai thoi gian t vi pt Vo nghiem "); (11) getch(); } (12)