feat: add write-location-file

write-location-file/main.c

@@ -0,0 +1,41 @@
+#include<stdio.h>
+
+/*use macro extern int errno*/
+#include <errno.h>
+#include <string.h>
+
+int main()
+{
+  FILE *fp;
+
+  /*latitude e.g. 52.26594*/
+  char lat [9];
+
+  /*longitude e.g. 10.52673*/
+  char lon [9];
+
+  printf("\nStart...\n");
+
+  fp = fopen("location.csv", "w");
+  if (fp==NULL)
+  {
+    /*failed to open file and associate stream*/
+    fprintf(stderr, "Value of errno: %d\n", errno);
+    fprintf(stderr, "Error opening file: %s\n", strerror(errno));
+  }
+
+  printf("\nEnter latitude: ");
+  /*read from stdin*/
+  scanf(" %8s", lat);
+  printf("\nlat: %s", lat);
+
+  printf("\nEnter longitude: ");
+  scanf(" %8s", lon);
+  printf("\nlon: %s", lon);
+
+  fprintf(fp, "%8s,%8s\n", lat, lon);
+  fclose(fp);
+
+  printf("\nDone!\n");
+  return 0;
+}

write-location-file/makefile

@@ -0,0 +1,9 @@
+#put the most commonly desired target first (default)
+all: main.o
+	gcc main.o -o write
+main.o: main.c
+	gcc -I . -c main.c
+clean:
+	rm -rf *.o
+	rm -rf write
+	rm -rf *.csv