How can I modify the c program such that if the user enters a non-float input,“invalid input” is shown to the user?

Question

Here is the code:

// c program to add 10 elements entered by the user
#include <stdio.h>
int main()
{
    int i;
    float elements[10]; //declaring the array
    float sum = 0;

    for (i = 0; i < 10; ++i)
    {
        printf("Enter element %d: ", i + 1); //getting the elements from  the user
        scanf("%f", &elements[i]);           //storing the elements
        sum += elements[i];                  //adding integers entered by the user to t   he sum variable
    }

    printf("sum of above entered elements is : %.4f", sum); //printing the sum to four decimal places
    return 0;
}

Answer 1

Do something like:

• Let the user input a string
• Validate input on the string
• Convert it to a float if everything is fine.