Basic formatting and struct creation

src/main.c

@@ -1,5 +1,102 @@
 #include <stdio.h>
+#include <stdlib.h>
+
+#define STAGE_FORMATTING_STRING "========================="
+#define STAGE_ONE 1
+#define STAGE_TWO 2
+#define STAGE_THREE 3
+#define STAGE_FOUR 4
+
+#define MAX_NUM_CARDS 100
+#define CREDIT_CARD_ID_LEN 8
+#define TRANSACTION_ID_LEN 12
+#define TRANSACTION_TIME_LEN 19
+#define END_CREDIT_CARDS "%%%%%%%%%%"
+
+typedef struct {
+    char card_id[CREDIT_CARD_ID_LEN];
+    int daily_lim;
+    int trans_lim;
+} credit_card_t;
+
+typedef struct {
+    char trans_id[TRANSACTION_ID_LEN];
+    char card_id[CREDIT_CARD_ID_LEN];
+    char trans_time[TRANSACTION_TIME_LEN];
+    int trans_amount;
+} transaction_t;
+
+void print_stage(int stage_num);
+void stage_one();
+void stage_two();
+void stage_three();
+void stage_four();
+
+int main(int argc, char *argv[]) {
+    /* holds all the credit cards */
+    credit_card_t all_cards[MAX_NUM_CARDS];
+
+    /* holds all the transactions */
+    transaction_t all_transactions[MAX_NUM_CARDS];
+    /*  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+     *  Dynamic memory allocation required as 
+     *  size of all_transactions isn't known
+     *  !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
+     */
+
+    /* stage 1: reading one credit card record */
+    stage_one();
+    
+    /* stage 2: reading all credit card records */
+    stage_two();
+
+    /* stage 3: reading the transactions */
+    stage_three();
+
+    /* stage 4: checking for fraudulent transactions */
+    stage_four();
 
-int main() {
     return 0;
 }
+
+/* print the stage header */
+void print_stage(int stage_num) {
+    printf(STAGE_FORMATTING_STRING);
+    printf("Stage %d", stage_num);
+    printf(STAGE_FORMATTING_STRING);
+    printf("\n");
+}
+
+/* stage 1: reading one credit card record */
+void stage_one() {
+    print_stage(STAGE_ONE);
+
+
+
+    printf("\n");
+}
+
+/* stage 2: reading all credit card records */
+void stage_two() {
+    print_stage(STAGE_TWO);
+
+
+
+    printf("\n");
+}
+
+/* stage 3: reading the transactions */
+void stage_three() {
+    print_stage(STAGE_THREE);
+
+
+    printf("\n");
+}
+
+/* stage 4: checking for fraudulent transactions */
+void stage_four() {
+    print_stage(STAGE_FOUR);
+
+
+    printf("\n");
+}