added ws202425 courses

2023_CS50X/arrays/Source/uppercase2.c

@@ -0,0 +1,17 @@
+// Uppercases string using ctype library
+
+#include <cs50.h>
+#include <ctype.h>
+#include <stdio.h>
+#include <string.h>
+
+int main(void)
+{
+    string s = get_string("Before: ");
+    printf("After:  ");
+    for (int i = 0, n = strlen(s); i < n; i++)
+    {
+        printf("%c", toupper(s[i]));
+    }
+    printf("\n");
+}