11. Find the factorial of a number using iteration. Calculate factorial of 7.
Required Input:
7Expected Output:
Factorial of 7 is 5040
Code In C
#include
int factorial(int n) {
// Your code here
}
int main() {
int n = 7;
printf("Factorial of %d is %d\n", n, factorial(n));
return 0;
}
Output
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12. Check if two strings "listen" and "silent" are anagrams.
Required Input:
listen silentExpected Output:
Are anagrams: Yes
Code In C
#include
#include
int areAnagrams(char str1[], char str2[]) {
// Your code here
}
int main() {
char str1[] = "listen";
char str2[] = "silent";
printf("Are anagrams: %s\n", areAnagrams(str1, str2) ? "Yes" : "No");
return 0;
}
Output
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13. Write a function to merge two sorted arrays {1, 3, 5} and {2, 4, 6} into a single sorted array.
Required Input:
1 3 5
2 4 6Expected Output:
1 2 3 4 5 6
Code In C
#include
void mergeArrays(int arr1[], int n1, int arr2[], int n2, int result[]) {
// Your code here
}
int main() {
int arr1[] = {1, 3, 5};
int arr2[] = {2, 4, 6};
int result[6];
mergeArrays(arr1, 3, arr2, 3, result);
for (int i = 0; i < 6; i++) {
printf("%d ", result[i]);
}
printf("\n");
return 0;
}
Output
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14. Find the sum of all even numbers in an array {4, 7, 10, 13, 18}.
Required Input:
4 7 10 13 18Expected Output:
Sum of even numbers: 32
Code In C
#include
int sumEvenNumbers(int arr[], int n) {
// Your code here
}
int main() {
int arr[] = {4, 7, 10, 13, 18};
printf("Sum of even numbers: %d\n", sumEvenNumbers(arr, 5));
return 0;
}
Output
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15. Write a function to find the transpose of a 2x3 matrix {{1, 2, 3}, {4, 5, 6}}.
Required Input:
Matrix:
1 2 3
4 5 6Expected Output:
1 4
2 5
3 6
Code In C
#include
void transposeMatrix(int matrix[2][3], int transposed[3][2]) {
// Your code here
}
int main() {
int matrix[2][3] = {{1, 2, 3}, {4, 5, 6}};
int transposed[3][2];
transposeMatrix(matrix, transposed);
for (int i = 0; i < 3; i++) {
for (int j = 0; j < 2; j++) {
printf("%d ", transposed[i][j]);
}
printf("\n");
}
return 0;
}
Output
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16. Calculate the average of an array {15, 22, 8, 10, 35}.
Required Input:
15 22 8 10 35Expected Output:
Average: 18.00
Code In C
#include
float calculateAverage(int arr[], int n) {
// Your code here
}
int main() {
int arr[] = {15, 22, 8, 10, 35};
printf("Average: %.2f\n", calculateAverage(arr, 5));
return 0;
}
Output
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17. Check if a character 'A' is a vowel or consonant.
Required Input:
AExpected Output:
A is a vowel
Code In C
#include
void checkVowelConsonant(char ch) {
// Your code here
}
int main() {
char ch = 'A';
checkVowelConsonant(ch);
return 0;
}
Output
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18. Write a function to reverse an integer array {9, 2, 3, 5, 7}.
Required Input:
9 2 3 5 7Expected Output:
7 5 3 2 9
Code In C
#include
void reverseArray(int arr[], int n) {
// Your code here
}
int main() {
int arr[] = {9, 2, 3, 5, 7};
reverseArray(arr, 5);
for (int i = 0; i < 5; i++) {
printf("%d ", arr[i]);
}
printf("\n");
return 0;
}
Output
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19. Calculate the number of digits in an integer 12345.
Required Input:
12345Expected Output:
Number of digits: 5
Code In C
#include
int countDigits(int num) {
// Your code here
}
int main() {
int num = 12345;
printf("Number of digits: %d\n", countDigits(num));
return 0;
}
Output
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20. Find the largest element in each row of a 2x3 matrix {{3, 5, 1}, {7, 2, 8}}.
Required Input:
Matrix:
3 5 1
7 2 8Expected Output:
Max element in row 1: 5
Max element in row 2: 8
Code In C
#include
void maxInRows(int matrix[2][3]) {
// Your code here
}
int main() {
int matrix[2][3] = {{3, 5, 1}, {7, 2, 8}};
maxInRows(matrix);
return 0;
}
Output
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