Code:
#include<stdio.h>
#include<conio.h>
// viet chuong trinh nhap vao mot so va tinh tong tat ca cac so tu 1 toi so do
int nhap(){
int n;
printf("nhap vao so n:");
scanf("%d:",&n);
return n;
}
int tinhtong(int n){
int tong=0;
int i;
for(i=1;i<=n;i++){
tong+=i;
}
return tong;
}
int main(){
int a,s;
a=nhap();
s=tinhtong(a);
printf("tong la:%d",s);
getch();
}
#include<stdio.h>
#include<conio.h>
// viet chuong trinh nhap vao mot so va tinh tong tat ca cac so tu 1 toi so do
int nhap(){
int n;
printf("nhap vao so n:");
scanf("%d:",&n);
return n;
}
int tinhtong(int n){
int tong=0;
int i;
for(i=1;i<=n;i++){
tong+=i;
}
return tong;
}
int main(){
int a,s;
a=nhap();
s=tinhtong(a);
printf("tong la:%d",s);
getch();
}