Problem Solving Through Programming In C Assignment 7
Course Name: Problem Solving Through Programming In C NPTEL
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These are answers for Problem Solving Through Programming In C Assignment 7
1) Which of the following statement/s are false?
I. Array elements are stored in memory in contiguous locations.
II. An integer array always terminates with ‘\0’ (NULL).
a)l
b) ll
c) Both I and II
d) None
Answer: b) ll
2) If two strings are identical, then strcmp() function returns
a) 1
b) 0
c)-1
d) None of these
Answer: b) 0
3) Which of the following function is more appropriate for reading in a multi word string?
a) scanf()
b) gets()
c) printf()
d) puts()
Answer: b) gets()
These are answers for Problem Solving Through Programming In C Assignment 7
4) What will be printed after execution of the following code?
Answer: 40
5) What will be the output of the program?
a) Array
b) Array String
c) Array\0String
d) Compilation error
Answer: a) Array
6) What will be the output?
a) Programming
b) Language
c) Programming Language
d) Language Programming
Answer: c) Programming Language
These are answers for Problem Solving Through Programming In C Assignment 7
7) What will be the output?
a) n1= 8, n2=8
b) n1=9, n2=9
c) n1=8, n2=9
d) n1=9, n2=8
Answer: d) n1=9, n2=8
8) What will be the output?
Answer: 720
9) What will be the output?
a) assignment
b) tnemngissa
c) nothing will be printed
d) tttttttttt
Answer: c) nothing will be printed
These are answers for Problem Solving Through Programming In C Assignment 7
10) What will be the output?
a) Two strings are equal
b) Two strings are not equal
c) Would not print anything
d) Compilation error
Answer: c) Would not print anything
Assignment
Question 1
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
Solution:
#include < stdio.h>
int main()
{
int matrix[20][20];
int i,j,r,c;
scanf("%d",&r);
scanf("%d",&c);
for(i=0;i< r;i++)
{
for(j=0;j< c;j++)
{
scanf("%d",&matrix[i][j]);
}
}
int sum;
for(i=0;i< r;i++)
{
sum=0;
for(j=0;j< c;j++)
{
sum += matrix[i][j];
}
printf("%d\n",sum);
}
}These are answers for Problem Solving Through Programming In C Assignment 7
Question 2
Write a C program to find subtraction of two matrices i.e, matrix_A – matrix_B=matrix_C.
If the given martix are:
2 3 5 and 1 5 2
Then the output will be 1 -2 3
4 5 6 2 3 4 2 2 2
6 5 7 3 3 4 3 2 3
Solution:
#include < stdio.h>
int main()
{
int matrix_A[20][20];
int matrix_B[20][20];
int matrix_C[20][20];
int i,j,row,col;
scanf("%d",&row);
scanf("%d",&col);
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]);
}
}
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;
}These are answers for Problem Solving Through Programming In C Assignment 7
Question 3
Write a C program to print lower triangle of a square matrix.
For example the output of a given matrix
2 3 4 will be 2 0 0
5 6 7 5 6 0
4 5 6 4 5 6
Solution:
#include < stdio.h>
int main()
{
int matrix[20][20];
int i,j,r;
scanf("%d", &r);
for(i=0;i< r;i++)
{
for(j=0;j< r; j++)
{
scanf("%d",&matrix[i][j]);
}
}
for(i=0; i< r; i++)
{
for(j=0; j< r; j++)
{
if(i>=j)
printf("%d ", matrix[i][j]);
else
printf("%d ", 0);
}
printf("\n");
}
return 0;
}These are answers for Problem Solving Through Programming In C Assignment 7
Question 4
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.
Solution:
#include< stdio.h>
#include< string.h>
int main()
{
char str[100]={0},substr[100][100]={0};
scanf("%[^\n]s", str);
int i=0,j=0,k=0,a;
int minIndex=0,maxIndex=0,max=0,min=0;
char c;
//for splitting sentence into words
while(str[k]!='\0')
{
j=0;
while(str[k]!=' '&&str[k]!='\0' && 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;
maxIndex=i;
}
if(a< min)
{
min=a;
minIndex=i;
}
}
printf("Largest Word is: %s\nSmallest word is: %s\n",substr[maxIndex],substr[minIndex]);
return 0;
}These are answers for Problem Solving Through Programming In C Assignment 7
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