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C Exercises: Calculate n terms of square natural number and their sum

C For Loop: Exercise-25 with Solution

Write a program in C to display the n terms of square natural number and their sum. The series is as below:
1 4 9 16 ... n Terms

Sample Solution:

C Code:

#include <stdio.h>

void main()
{
   int i,n,sum=0;
   printf("Input the number of terms : ");
   scanf("%d",&n);
   printf("\nThe square natural upto %d terms are :",n);
   for(i=1;i<=n;i++)
   {
     printf("%d  ",i*i);
     sum+=i*i;
   }
   printf("\nThe Sum of Square Natural Number upto %d terms = %d \n",n,sum);
}

Sample Output: 

Input the number of terms : 5                                                                                 
                                                                                                              
The square natural upto 5 terms are :1  4  9  16  25                                                          
The Sum of Square Natural Number upto 5 terms = 55

Flowchart:

Flowchart: Calculate n terms of square natural number and their sum

C Programming Code Editor:

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Previous: Write a program in C to find the sum of the series [ x - x^3 + x^5 + ......].
Next: Write a program in C to find the sum of the series 1 +11 + 111 + 1111 + .. n terms.

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C Programming: Tips of the Day

Is there a way to specify how many characters of a string to print out using printf()?

The basic way is:

printf ("Here are the first 8 chars: %.8s\n", "A string that is more than 8 chars");

The other, often more useful, way is:

printf ("Here are the first %d chars: %.*s\n", 8, 8, "A string that is more than 8 chars");

Here, you specify the length as an int argument to printf(), which treats the '*' in the format as a request to get the length from an argument.

You can also use the notation:

printf ("Here are the first 8 chars: %*.*s\n",
        8, 8, "A string that is more than 8 chars");

This is also analogous to the "%8.8s" notation, but again allows you to specify the minimum and maximum lengths at runtime - more realistically in a scenario like:

printf("Data: %*.*s Other info: %d\n", minlen, maxlen, string, info);

The POSIX specification for printf() defines these mechanism

Ref : https://bit.ly/3u32GyO