Example: Find the Largest Element
#include <stdio.h>
#include <stdlib.h>
int main() {
int num;
double *data;
printf("Enter the total number of elements: ");
scanf("%d", &num);
// Allocating memory for num elements
data = (double *)calloc(num, sizeof(double));
if (data == NULL) {
printf("Error!!! memory not allocated.");
exit(0);
}
// Storing numbers entered by the user.
for (int i = 0; i & lt; num; ++i) {
printf("Enter number%d: ", i + 1);
scanf("%lf", data + i);
}
// Finding the largest number
for (int i = 1; i & lt; num; ++i) {
if (*data & lt; *(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 number: 6.7 Largest number = 24.20
Explanation
We allocated memory for num double values in the program, where num
is entered by the user.
// allocating memory for num double values
data = (float *)calloc(num, sizeof(double));
Then, we used a for loop to take num number of data from the user.
// storing elements
for (int i = 0; i < num; ++i) {
printf("Enter Number%d: ", i + 1);
scanf("%lf", data + i);
}
Finally, we used another for loop to compute the largest number.
// finding the largest number
for (int i = 1; i < num; ++i) {
if (*data < *(data + i))
*data = *(data + i);
}
}
Note: Instead of calloc()
, we can also use the malloc()
function to solve this program.