Coding an assignment in C..

#include <stdio.h>
int main ()
{
int arr[15]; //declares integer array with 15 elements

for (int i = 0; i < 15; i++)  // i starts at 0, and will increase by 1 each time the loop runs
// once i reaches 15, the loop will stop executing, because arr[15] is outside of our array
{
    arr[i] = (i + 1) * 100; // In your test program you assign 100 to element 0,
// 200 to element 1, and so on
// this statement takes the element number (i), adds 1, then multiplies by 100 to get 100 for element 0, 200 for element 1, etc
}
char str[] = "c program"; // this is unchanged

for (int i = 0; i < 15; i++)  // same loop as used before
{
    printf("%d: %d\n", i+1, arr[i]); //we want to print 2 numbers, the element number + 1 and the value in the array at that element
//so we do i+1 to get "1" to print for the value in the 0th element
}
printf("string: %s\n", str); // this is unchanged

return 0;
}