Problem Solving Through Programming in C Week 7: Programming Assignments Jan-Jun 2022

   NPTEL PROGRAMMING ASSIGNMENTS

Problem Solving Through Programming in C

Week-07: Program-01

Due Date of Submission 2022-03-17, 23:59 IST

Write a C Program to Count Number of Uppercase and Lowercase Letters in a given string. The given string may be a word or a sentence.

#include<stdio.h>

int main() {

   int upper = 0, lower = 0;

   char ch[100];

   scanf(" %[^\n]s", ch);

--Solution-- 

  int i; for(i=0;ch[i]!=0;i++){ if(ch[i]>='A' && ch[i]<='Z'){ upper++;} else { if(ch[i]>='a' && ch[i]<='z'){ lower++;} } }

   printf("Uppercase Letters : %d\n", upper); /*prints number of uppercase letters */

   printf("Lowercase Letters : %d", lower); /*prints number of lowercase letters */

 

   return (0);

}

Week-07 Program-02

Due Date of Submission 2022-03-17, 23:59 IST

Write a C program to find the sum of all elements of each row of a matrix.
 Example: For a matrix
 4 5 6
 6 7 3
 1 2 3
 The output will be
 15
 16
 6

#include <stdio.h>
int main()
{
    int matrix[20][20];
    int i,j,r,c;
    scanf("%d",&r); //Accepts number of rows
    scanf("%d",&c); //Accepts number of columns 
    for(i=0;i< r;i++) //Accepts the matrix elements from the test case data
    {
        for(j=0;j< c;j++)
        {
            scanf("%d",&matrix[i][j]); 
        }
    }

--Solution-- 

  for(i=0;i<r;i++){ int sum=0; for(j=0;j<c;j++){ sum+=matrix[i][j]; } printf("%d\n",sum); } return 0; }

Week-07 Program-03

Due Date of Submission 2022-03-17, 23:59 IST

Write a C program to find subtraction of two matrices i.e. matrix_A  - matrix_B = matrix_C.
If the given matrix are
2 3 5        and       1 5 2
4 5 6                     2 3 4
6 5 7                     3 3 4
Then the output will be
1 -2  3
2  2  2
3  2  3
(The elements of the output matrix are separated by one blank space)

#include <stdio.h>
int main()
{
    int matrix_A[20][20], matrix_B[20][20], matrix_C[20][20];
    int i,j,row,col;
    scanf("%d",&row); //Accepts number of rows
    scanf("%d",&col); //Accepts number of columns 
    for(i=0; i<row; i++)
    {
        for(j=0; j<col; j++)
        {
            scanf("%d", &matrix_A[i][j]);
        }
    }
    for(i=0; i<row; i++)
    {
        for(j=0; j<col; j++)
        {
            scanf("%d", &matrix_B[i][j]);
        }
    }

--Solution-- 

  for(i=0;i<row;i++){ for(j=0;j<col;j++){ matrix_C[i][j]=matrix_A[i][j]-matrix_B[i][j]; } } for(i=0;i<row;i++){ for(j=0;j<col;j++){ printf("%d ",matrix_C[i][j]); } printf("\n"); } return 0; }

Week-07 Program-04

Due Date of Submission 2022-03-17, 23:59 IST

Write a C program to print Largest and Smallest Word from a given sentence. If there are two or more words of same length, then the first one is considered. A single letter in the sentence is also consider as a word.

#include<stdio.h>

#include<string.h>

int main()

{

    char str[100]={0},substr[100][100]={0};  

scanf("%[^\n]s", str);

--Solution-- 

  int i=0,j=0,k=0,a,n=0,m=0,max=0,min=0; while(str[k]!='\0')//for splitting sentence { j=0; while(str[k]!=' '&&str[k]!='\0') { if(str[k]!='.') substr[i][j]=str[k]; k++; j++; } substr[i][j]='\0'; i++; if(str[k]!='\0') { k++; } } int len=i; max=strlen(substr[0]); min=strlen(substr[0]); for(i=0;i<len;i++) { a=strlen(substr[i]); if(a>max) { max=a; m=i; } if(a<min) { min=a; n=i; } } printf("Largest Word is: %s\nSmallest word is: %s\n",substr[m],substr[n]); }