Charles Tritt / Mbed 2 deprecated ArrayRunSize

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Dependencies:   mbed

main.cpp@0:f5bbc63c654b, 2017-10-23 (annotated)

Committer:
CSTritt
Date:
Mon Oct 23 13:06:52 2017 +0000
Revision:
0:f5bbc63c654b
Initial version.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
CSTritt 0:f5bbc63c654b 1 /*
CSTritt 0:f5bbc63c654b 2 Project: ArrayRunSize
CSTritt 0:f5bbc63c654b 3 File: main.cpp
CSTritt 0:f5bbc63c654b 4 Ported to mbed/Nucleo by: Dr. C. S. Tritt
CSTritt 0:f5bbc63c654b 5 Last revised: 10/22/17 (v. 1.1)
CSTritt 0:f5bbc63c654b 6
CSTritt 0:f5bbc63c654b 7 Horton Program 5.7 Averaging a variable number of grades. Runtime array
CSTritt 0:f5bbc63c654b 8 creation. Also demonstrates array output showing index values.
CSTritt 0:f5bbc63c654b 9
CSTritt 0:f5bbc63c654b 10 */
CSTritt 0:f5bbc63c654b 11 #include "mbed.h"
CSTritt 0:f5bbc63c654b 12
CSTritt 0:f5bbc63c654b 13 int main(void)
CSTritt 0:f5bbc63c654b 14 {
CSTritt 0:f5bbc63c654b 15 printf("\nAssure Terminal > local echo is on.\n");
CSTritt 0:f5bbc63c654b 16 printf("Enter the number of grades: ");
CSTritt 0:f5bbc63c654b 17 size_t nGrades = 0; // Number of grades.
CSTritt 0:f5bbc63c654b 18 scanf("%zd", &nGrades); // The z is a type modifier for size type.
CSTritt 0:f5bbc63c654b 19 float grade[nGrades]; // Array storing nGrades values.
CSTritt 0:f5bbc63c654b 20 float sum = 0.0f; // Initialize sum of grades.
CSTritt 0:f5bbc63c654b 21 printf("\nEnter the %zd grades:\n", nGrades); // Prompt for grade entry.
CSTritt 0:f5bbc63c654b 22
CSTritt 0:f5bbc63c654b 23 // Read the grades to be averaged.
CSTritt 0:f5bbc63c654b 24 for(size_t i = 0 ; i < nGrades ; ++i) {
CSTritt 0:f5bbc63c654b 25 printf("%zd> ", i + 1);
CSTritt 0:f5bbc63c654b 26 scanf("%f", &grade[i]); // Read a grade.
CSTritt 0:f5bbc63c654b 27 sum += grade[i]; // Add it to the running sum.
CSTritt 0:f5bbc63c654b 28 }
CSTritt 0:f5bbc63c654b 29
CSTritt 0:f5bbc63c654b 30 // Display results.
CSTritt 0:f5bbc63c654b 31 printf("The grades you entered are:\n");
CSTritt 0:f5bbc63c654b 32 for(size_t i = 0 ; i < nGrades ; ++i) {
CSTritt 0:f5bbc63c654b 33 printf("Grade[%2zd] = %.1f ", i + 1, grade[i]);
CSTritt 0:f5bbc63c654b 34 if ((i+1) % 5 == 0) printf("\n"); // After 5 values, go to a new line.
CSTritt 0:f5bbc63c654b 35 }
CSTritt 0:f5bbc63c654b 36
CSTritt 0:f5bbc63c654b 37 float average = sum/nGrades; // Calculate and display the average.
CSTritt 0:f5bbc63c654b 38 printf("\nAverage of the %zd grades entered is: %.2f\n", nGrades, average);
CSTritt 0:f5bbc63c654b 39 while (true) {};
CSTritt 0:f5bbc63c654b 40 }