added weekly exercises of isp-ws25

c/isp-ws25/weeklies/week01/w01ex03.c

@@ -0,0 +1,20 @@
+/*
+Exercise 03:
+Implement a ASCII-to-number converter.
+It should ask for a character, display it as a number, then the original character again.
+Insert enough spaces so that the character and number align.
+*/
+
+#include <stdio.h>
+
+unsigned char input_char = 0;
+
+int main()
+{
+    printf("%-17s", "Insert character: ");
+    scanf("%c", &input_char);
+    printf("%-17s %d\n", "Number: ", input_char);
+    printf("%-17s %c\n", "ASCII Character: ", input_char);
+    
+    return 0;
+}