Example: Find the Largest Element
#include <stdio.h>
#include <stdlib.h>
int main() {
int n;
double *data;
printf("Enter the total number of elements: ");
scanf("%d", &n);
// Allocating memory for n elements
data = (double *)calloc(n, sizeof(double));
if (data == NULL) {
printf("Error!!! memory not allocated.");
exit(0);
}
// Storing numbers entered by the user.
for (int i = 0; i < n; ++i) {
printf("Enter number%d: ", i + 1);
scanf("%lf", data + i);
}
// Finding the largest number
for (int i = 1; i < n; ++i) {
if (*data < *(data + i)) {
*data = *(data + i);
}
}
printf("Largest number = %.2lf", *data);
free(data);
return 0;
}
Output
Enter the total number of elements: 5 Enter number1: 3.4 Enter number2: 2.4 Enter number3: -5 Enter number4: 24.2 Enter number5: 6.7 Largest number = 24.20
Explanation
In the program, we have asked the user to enter the total number of elements which is stored in the variable n
. Then, we have allocated memory for n number of double
values.
// Allocating memory for n double values
data = (double *)calloc(n, sizeof(double));
Then, we used a for
loop to take n number of data from the user.
// Storing elements
for (int i = 0; i < n; ++i) {
printf("Enter Number%d: ", i + 1);
scanf("%lf", data + i);
}
Finally, we used another for
loop to compute the largest number.
// Computing the largest number
for (int i = 1; i < n; ++i) {
if (*data < *(data + i))
*data = *(data + i);
}
}
Note: Instead of calloc()
, it's also possible to solve this problem using the malloc() function.