Bai tap c

/* Tim so lon nhat trong 4 so nguyen */
/* Cau truc if du */
main()
{
int a,b,c,d,max1,max2,max,t;
tt:clrscr();
printf(" CHUONG TRINH TIM SO NGUYEN LON NHAT TRONG 4 SO");
printf(" Nhap so thu nhat : ");
scanf("%d",&a);
printf(" Nhap so thu hai : ");
scanf("%d",&b);
printf(" Nhap so thu ba : ");
scanf("%d",&c);
printf(" Nhap so thu tu : ");
scanf("%d",&d);
if (a > b)
max1=a;
else
max1=b;
if (c > d)
max2=c;
else
max2=d;
if (max1 > max2)
{
max=max1;
clrscr();
printf(" KET QUA");
printf(" Trong 4 so vua nhap");
printf(" So thu nhat = %4d ",a);
printf(" So thu hai = %4d ",b);
printf(" So thu ba = %4d ",c);
printf(" So thu tu = %4d ",d);
printf(" So lon nhat trong 4 so la = %4d ",max);
}
else
{
max=max2;
clrscr();
printf(" KET QUA");
printf(" Trong 4 so vua nhap");
printf(" So thu nhat = %4d ",a);
printf(" So thu hai = %4d ",b);
printf(" So thu ba = %4d ",c);
printf(" So thu tu = %4d ",d);
printf(" So lon nhat trong 4 so la = %4d ",max);
}
printf(" Tiep tuc (bam so 1) / Cham dut (bam so 0) ");
scanf("%d",&t);
if (t==1)


/* Tim so lon nhat cua 2 so thuc */
/* Cau lenh if du */
main()
{
float a,b,max;
int k;
tt:clrscr();
printf(" Nhap so thu nhat (a) = ");
scanf("%f",&a);
printf(" Nhap so thu hai (b) = ");
scanf("%f",&b);
if(a>b)
max=a;
else
max=b;
printf(" So lon nhat trong hai so la =%8.2f",max);
printf(" Tiep tuc (go so 1)/dung (go so 0)");
scanf("%d",&k);
if(k==1) goto tt;
}
/*Tim so lon nhat trong 2 so thuc */
/*Cau truc if thieu */

main()
{
float a,b,max;
int k;
tt:clrscr();
printf(" Nhap so thu nhat (a) = ");
scanf("%f",&a);
printf(" Nhap so thu hai (b) = ");
scanf("%f",&b);
max=a;
if(b>a)
max=b;
printf(" a= %8.2f",a);
printf(" b= %8.2f",b);
printf(" So lon nhat trong hai so la =%8.2f",max);
printf(" Tiep tuc nua khong ? (0/1)");
printf(" (Go so 1 de tiep tuc,