C program to Calculate 1 + 2 + 3 + 4 + 5 + ... + n series

In c language you can print any number series. Here i will show you how to print number series in c language with explanation. In case of print number series you need to focus on common difference between two numbers..

C program to Calculate 1 + 2 + 3 + 4 + 5 + ... + n series




#include<stdio.h>
int main()
{
    int i,n,sum=0;
    n=10;
    for(i=1;i<=n;i++)
    {
        sum+=i;
    }
    printf("Sum: %d",sum);
    return 0;
}



Output:


sum: 55




//1 + 2 + 3 + 4 + 5 + ... + n
#include <stdio.h>
#include <stdlib.h>

int main()
{
    int i,n,sum=0;
    printf("Enter n value(1 + 2 + 3 + 4 + 5 + ... + n):");
    scanf("%d",&n);
    for(i=1;i<=n;i++)
    {
        sum+=i;
    }
    printf("Sum: %d",sum);
    return 0;
}




Output:


Enter n value(1 + 2 + 3 + 4 + 5 + ... + n):50
Sum: 1275
Process returned 0 (0x0)   execution time : 5.727 s




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