add dir simple example

example/eg1.c

@@ -0,0 +1,43 @@
+#include "ftest/ftest.h"
+
+TEST(foo){
+  PRINTF("first test\n");
+  int a=1;
+  EXPECT_TRUE(1==a);
+}
+
+TEST(foo){ /* same name*/
+  sleep(2);
+  float a=0.001, b=0.0005;
+  PRINTF("after sleeping 2 seconds, we test if %f ?= 2*%f\n",a,b);
+  EXPECT_EQ_TYPE_FLOAT(a,2*b);
+}
+
+TEST(foo){
+  sleep(1);
+  double a=0.001, b=0.0001;
+  LOG("after 1 sec, \n");
+  EXPECT_LT_TYPE_DOUBLE(b,a);
+  ASSERT_GE_TYPE_DOUBLE(a,b);
+  ASSERT_LE_TYPE_DOUBLE(a,b);
+  LOG("this line will not print");
+}
+
+TEST(){
+  EXPECT_TRUE(2==1);
+  LOG("this line will print: the precedent expect failed\n");
+}
+TEST(){
+  sleep(1);
+  EXPECT_FALSE(2==1);
+}
+
+TEST(an_other_test){
+  LOG("FINAL, no test, only sleep\n");
+  sleep(2);
+}
+
+int main(int argc, char **argv){
+  run_all_tests_args(argc,argv);
+  return 0;
+}