Introduction to condition and switch
example of how to use condition in c
Different example of condition in c programming
example of how to use switch in c programming
example of different qauestion using switch in c programming
Introduction to Loop in c programming
Different question of using loop in c programming
Introduction to array in c programming
different question in c using array 1D
different question and answer in array using c programming
Example of different question in c programming
Write a program to print all negative elements in an array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
printf("Negative elements in the array: ");
for (int i = 0; i < size; i++) {
if (arr[i] < 0) {
printf("%d ", arr[i]);
}
}
return 0;
}
Write a program to count total number of negative elements in array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
int negativeCount = 0;
for (int i = 0; i < size; i++) {
if (arr[i] < 0) {
negativeCount++;
}
}
printf("Total number of negative elements: %d\n", negativeCount);
return 0;
}
Write a program to read and print elements of array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
printf("Elements of the array: ");
for (int i = 0; i < size; i++) {
printf("%d ", arr[i]);
}
return 0;
}
Write a program to find sum of all elements of an array
#include <stdio.h>
int main() {
int size, sum = 0;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
sum += arr[i];
}
printf("Sum of all elements: %d\n", sum);
return 0;
}
Write a program to count even and odd elements in an array
#include <stdio.h>
int main() {
int size, evenCount = 0, oddCount = 0;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
if (arr[i] % 2 == 0) {
evenCount++;
} else {
oddCount++;
}
}
printf("Even elements: %d\n", evenCount);
printf("Odd elements: %d\n", oddCount);
return 0;
}
Write a program to find maximum and minimum element in array
#include <stdio.h>
int main() {
int size, max, min;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
if (i == 0 || arr[i] > max) {
max = arr[i];
}
if (i == 0 || arr[i] < min) {
min = arr[i];
}
}
printf("Maximum element: %d\n", max);
printf("Minimum element: %d\n", min);
return 0;
}
Write a program to insert an element in array
#include <stdio.h>
int main() {
int size, element, position;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
printf("Enter the element to insert: ");
scanf("%d", &element);
printf("Enter the position to insert (0-%d): ", size);
scanf("%d", &position);
if (position < 0 || position > size) {
printf("Invalid position.\n");
} else {
for (int i = size - 1; i >= position; i--) {
arr[i + 1] = arr[i];
}
arr[position] = element;
size++;
printf("Element inserted successfully.\n");
printf("Updated array: ");
for (int i = 0; i < size; i++) {
printf("%d ", arr[i]);
}
printf("\n");
}
return 0;
}
Write a program to print all unique element in an array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
printf("Unique elements in the array: ");
for (int i = 0; i < size; i++) {
int isUnique = 1;
for (int j = 0; j < i; j++) {
if (arr[i] == arr[j]) {
isUnique = 0;
break;
}
}
if (isUnique) {
printf("%d ", arr[i]);
}
}
printf("\n");
return 0;
}
Write a program to sort an array in ascending order
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
// Bubble Sort to sort in ascending order
for (int i = 0; i < size - 1; i++) {
for (int j = 0; j < size - i - 1; j++) {
if (arr[j] > arr[j + 1]) {
// Swap elements
int temp = arr[j];
arr[j] = arr[j + 1];
arr[j + 1] = temp;
}
}
}
printf("Sorted array in ascending order: ");
for (int i = 0; i < size; i++) {
printf("%d ", arr[i]);
}
printf("\n");
return 0;
}
Write a program to copy all elements of one array to another
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the source array: ");
scanf("%d", &size);
int source[size];
printf("Enter %d elements of the source array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &source[i]);
}
int destination[size];
for (int i = 0; i < size; i++) {
destination[i] = source[i];
}
printf("Elements copied to another array: ");
for (int i = 0; i < size; i++) {
printf("%d ", destination[i]);
}
printf("\n");
return 0;
}
Write a program to count number of each element in an array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
printf("Number of each element in the array:\n");
for (int i = 0; i < size; i++) {
int count = 1;
for (int j = i + 1; j < size; j++) {
if (arr[i] == arr[j]) {
count++;
// To avoid counting the same element multiple times
arr[j] = arr[size - 1];
size--;
}
}
if (arr[i] != arr[size - 1]) {
printf("%d occurs %d times\n", arr[i], count);
}
}
return 0;
}
Write a program to delete all duplicate elements from an array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
int newSize = size;
for (int i = 0; i < newSize; i++) {
for (int j = i + 1; j < newSize;) {
if (arr[i] == arr[j]) {
for (int k = j; k < newSize - 1; k++) {
arr[k] = arr[k + 1];
}
newSize--;
} else {
j++;
}
}
}
printf("Array with duplicate elements removed: ");
for (int i = 0; i < newSize; i++) {
printf("%d ", arr[i]);
}
printf("\n");
return 0;
}
Write a program count total duplicate elements in an array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
int duplicateCount = 0;
for (int i = 0; i < size; i++) {
for (int j = i + 1; j < size; j++) {
if (arr[i] == arr[j]) {
duplicateCount++;
// To avoid counting the same element multiple times
arr[j] = arr[size - 1];
size--;
}
}
}
printf("Total duplicate elements in the array: %d\n", duplicateCount);
return 0;
}
Write a program to merge two sorted array
#include <stdio.h>
int main() {
int size1, size2;
printf("Enter the size of the first array: ");
scanf("%d", &size1);
int arr1[size1];
printf("Enter %d elements of the first array (in ascending order):\n", size1);
for (int i = 0; i < size1; i++) {
scanf("%d", &arr1[i]);
}
printf("Enter the size of the second array: ");
scanf("%d", &size2);
int arr2[size2];
printf("Enter %d elements of the second array (in ascending order):\n", size2);
for (int i = 0; i < size2; i++) {
scanf("%d", &arr2[i]);
}
int mergedArray[size1 + size2];
int sizeMerged = size1 + size2;
int index1 = 0, index2 = 0;
for (int i = 0; i < sizeMerged; i++) {
if (index1 < size1 && (index2 >= size2 || arr1[index1] < arr2[index2])) {
mergedArray[i] = arr1[index1];
index1++;
} else {
mergedArray[i] = arr2[index2];
index2++;
}
}
printf("Merged array: ");
for (int i = 0; i < sizeMerged; i++) {
printf("%d ", mergedArray[i]);
}
printf("\n");
return 0;
}
Write a program to put even and odd elements of array in two separate array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
int evenArray[size];
int oddArray[size];
int evenCount = 0, oddCount = 0;
for (int i = 0; i < size; i++) {
if (arr[i] % 2 == 0) {
evenArray[evenCount] = arr[i];
evenCount++;
} else {
oddArray[oddCount] = arr[i];
oddCount++;
}
}
printf("Even elements: ");
for (int i = 0; i < evenCount; i++) {
printf("%d ", evenArray[i]);
}
printf("\n");
printf("Odd elements: ");
for (int i = 0; i < oddCount; i++) {
printf("%d ", oddArray[i]);
}
printf("\n");
return 0;
}
Write a program to find reverse of an array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
printf("Original array: ");
for (int i = 0; i < size; i++) {
printf("%d ", arr[i]);
}
printf("\n");
int reversedArray[size];
for (int i = 0; i < size; i++) {
reversedArray[i] = arr[size - i - 1];
}
printf("Reversed array: ");
for (int i = 0; i < size; i++) {
printf("%d ", reversedArray[i]);
}
printf("\n");
return 0;
}
Write a program to right rotate an array
#include <stdio.h>
void rightRotate(int arr[], int size, int d) {
int temp[d];
for (int i = 0; i < d; i++) {
temp[i] = arr[size - d + i];
}
for (int i = size - 1; i >= d; i--) {
arr[i] = arr[i - d];
}
for (int i = 0; i < d; i++) {
arr[i] = temp[i];
}
}
int main() {
int size, d;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
printf("Enter the number of positions to right rotate: ");
scanf("%d", &d);
rightRotate(arr, size, d);
printf("Right rotated array: ");
for (int i = 0; i < size; i++) {
printf("%d ", arr[i]);
}
printf("\n");
return 0;
}
Write a program to find reverse of an array
#include <stdio.h>
int main() {
int size;
printf("Enter the size of the array: ");
scanf("%d", &size);
int arr[size];
printf("Enter %d elements of the array:\n", size);
for (int i = 0; i < size; i++) {
scanf("%d", &arr[i]);
}
printf("Original array: ");
for (int i = 0; i < size; i++) {
printf("%d ", arr[i]);
}
printf("\n");
int reversedArray[size];
for (int i = 0; i < size; i++) {
reversedArray[i] = arr[size - i - 1];
}
printf("Reversed array: ");
for (int i = 0; i < size; i++) {
printf("%d ", reversedArray[i]);
}
printf("\n");
return 0;
}
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Email: info@learn.co.rw
Phone: +250723709880
Whatsap: +250725527181
we will try to reply to your message as quickly as we can. please be aware that because of many messages we receive it take us same time to respond