Problem Solving Through Programming in C NPTEL Week 5 programs

This article will help you with the answers of Problem Solving Through Programming in C NPTEL Week 5 programs.

Week 5 Program 01 Solution

Write a C program to count total number of digits of an Integer number (N).

#include <stdio.h>
int main()
{
  int N; 
  scanf("%d",&N); /*The number is accepted from the test case data*/

  /* Complete the rest of the code. Please use the printf statements as below
  by just changing the variables used in your program 

  printf("The number %d contains %d digits.", N, count);

  */

  int num = N, count = 0;
  while(num > 0) {
     num = num / 10;
     count++;
  }
  printf("The number %d contains %d digits.", N, count);
  return 0;
}

Week 5 Program 02 Solution

Write a C program to find sum of following series where the value of N is taken as input
 1+ 1/2 + 1/3 + 1/4 + 1/5 + .. 1/N

#include<stdio.h>
int main()
{
  int N;
  float sum = 0.0;
  scanf("%d",&N); /*Read the value of N from test cases provided*/

  /* Complete the program. Please use the printf statement given below:

  printf("Sum of the series is: %.2f\n", sum);

  */

  for(int i=1; i<=N; i++){
     sum += (float)1/i;
  }
  printf("Sum of the series is: %.2f\n", sum);
  return 0;
}

Week 5 Program 03 Solution

Write a C program to print the following Pyramid pattern upto Nth row. Where N (number of rows to be printed) is taken as input. For example when the value of N is 5 the pyramid will be printed as follows
*****
****
***
**
*

#include<stdio.h>
int main()
{
  int N;
  scanf("%d", &N); /*The value of N is taken as input from the test case */


  for(int i=N; i>0; i--) {
    for(int j=1; j<=i; j++) {
       printf("*");
    }
    printf("\n");
  }
  return 0;
}

Week 5 Program 04 Solution

Write a C program to find sum of following series where the value of N(odd integer number) is taken as input
1²+3²+5²+…..+n²

#include<stdio.h>
int main()
{
  int n, sum=0;
  scanf("%d",&n); //Value of n is taken from the test cases 

  for(int i=1; i<=n; i=i+2){
     sum += i*i;
  }
  printf("Sum = %d", sum);
  
  return 0;
}

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