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Print the number series 1 3 6 using for loop in C++

for Loop - Question 5

In this question, we will see how to print the number series 1 3 6... in C++ programming using for loop. To know more about for loop click on the for loop lesson.

Q5) Write a program in C++ to print the number series given below using for loop.

1 3 6 10 15 21 28 36 45 55

Program

#include <iostream>
#include <conio.h>

using namespace std;

int main()
{
    int i,s=0;
    for(i=1; i<=10; i=i+1)
    {
        s=s+i;
        cout<<s<<" ";
    }
    return 0;
}

Output

1 3 6 10 15 21 28 36 45 55
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