Validating Input with scanf_s in C++
To sum user-input numbers until a non-numeric character terminates the program, check the return value of scanf_s. It returns the count of successfully read items, so a return value of 1 indicates valid input.
#include <iostream>
#include <cstdio>
int main() {
int value = 0;
long total = 0L;
int result;
do {
...
Posted on Sun, 10 May 2026 21:23:57 +0000 by john010117