Aktualizovat du3/program.c

2025-03-14 01:08:24 +00:00 · 2025-03-14 01:08:24 +00:00 · 9c4ee978e4
commit 9c4ee978e4
parent 7870d6c4ef
1 changed files with 3 additions and 0 deletions
--- a/du3/program.c
+++ b/du3/program.c
@ -31,6 +31,9 @@ int check(char* input) {
    char znak;
    int a=0;
     a=sscanf(input, " %lf %c %lf = %lf ", &number1, &znak, &number2, &givenResult);
+     if (input == NULL || strlen(input) == 0 || strspn(input, " \t\n") == strlen(input)) {
+        return 0;
+             }
       if (a != 4) {
        return 0;
        }else {