tim tong cac chu so va so cac chu so
/*tinh tong cac chu so va so cac chu so*/
#include<stdio.h>
#include<conio.h>
#include<math.h>
int main()
{
int n,ln,a,b;
int i;
i=0;
printf("nhap so nguyen n:");
scanf("%d",&n);
ln=n;
a=0;
while(n!=0)
{
b=n%10;
a=a+b;
i=i+1;/*bien i dung de dem so lan thuc hien phep tinh =>i la so chu so*/
n=n/10;
}
printf("tong cac chu so cua %d la: %d
",ln,a);
printf("so %d co %d chu so",ln,i);
getch();
return 0;
}
/*VD:
n=123 n=12 n=1
=>ln=123
123#0 12#0 1#0
b=3 b=2 b=1%10=1
a=3 a=3+2=5 a=5+1=6
i=1 i=1+1=2 i=2+1=3
n=12 n=12/10=1 n=1/10=0
*/
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