chưa hiểu cau hỏi nên hỏi

[annguyen]

#include <stdio.h>
#include<conio.h>
void mang_hex(int a[20],long n)
{ int i=0,j, tg;
while(n>=16) //doi so long n ra mang thap luc phan
{ a[i]=n%16;
i++;
}
a[i]=n%16;
for(j=0;j<=i/2;j++);
{ tg=a[j];
a[j]=a[i-j];
a[i-j]=tg;
}
for(j=0;i<i;j++)
{ printf("%d, ",a[j]);
}
printf("%d
",a[i]);

}

int main()
{
int a[20];

long n=2147483640;

mang_hex(a,n);
getch();
}
sua lai code cho nó chạy trên dev C giùm mình

[datnguyen0312]

#include <stdio.h>#include<conio.h>void mang_hex(int a[20],long n){ int i=0,j, tg;while(n>=16) //doi so long n ra mang thap luc phan{ a[i]=n%16;n/=16;i++;}a[i]=n%16;for(j=0;j<=i/2;j++);{ tg=a[j];a[j]=a[i-j];a[i-j]=tg;}for(j=0;j<i;j++){ printf("%d, ",a[j]);}printf("%d
",a[i]); } int main(){int a[20]; long n=2147483640; mang_hex(a,n);getch();return 0;}