added c skills excercise

session1/c_skills/Makefile

@@ -0,0 +1,18 @@
+TARGETS = ass1 ass2
+
+CC = gcc
+CFLAGS = -g
+
+ifdef DEFINES
+	CFLAGS += -D$(DEFINES)
+endif
+
+all: $(TARGETS) Makefile
+clean:
+	rm -f $(TARGETS)
+	rm -f *.o *.~
+
+ass1: ass1.o
+ass2: ass2.o
+
+.PHONY: all clean

session1/c_skills/ass1.c

@@ -0,0 +1,31 @@
+#include <stdio.h>
+
+struct route {
+	int routeID;
+	char descrp[25];
+};
+
+typedef struct route Route;
+
+
+int main(int argc , char *argv[])
+{
+	Route route1;
+	struct route longroutes[10];
+	struct route * routePtr;
+
+	printf("route id = ");
+	scanf("%d", &route1.routeID);
+
+	printf("route descrip = ");
+	scanf("%24s", route1.descrp);
+	
+	longroutes[2] = route1;
+	routePtr = longroutes;
+	
+	printf("route id = %d, route descrip = %s\n",
+		(routePtr+2)->routeID,
+		(routePtr+2)->descrp);
+
+	return 0;
+}

session1/c_skills/ass2.c

@@ -0,0 +1,35 @@
+#include <stdio.h>
+#include <string.h>
+
+int main(int argc, char *argv[])
+{
+	double taxrate = 7.3, discountrate;
+	char buyer[100], seller[100];
+	
+	double * tmpPtr = &taxrate;
+	
+	printf("*tmpPtr = %f\n", *tmpPtr);
+	
+	discountrate = *tmpPtr;
+	
+	printf("discountrate = %.2f\n", discountrate);
+	
+	printf("&taxrate = %p\n", &taxrate);
+	
+	printf("tmpPtr = %p\n", tmpPtr);
+
+	printf("equal? => %s\n", tmpPtr == &taxrate ? "yes" : "no");
+
+	strncpy(buyer, "Hello World!", sizeof(buyer));
+	
+	strncpy(seller, buyer, sizeof(seller));
+	
+	printf("buyer == seller? => %s\n", 
+		!strcmp(buyer, seller) ? "yes" : "no");
+		
+	strncat(buyer, seller, sizeof(buyer));
+		
+	printf("strlen(buyer) = %u\n", strlen(buyer));
+
+	return 0;
+}