tasks a-s

Task/Program-name/C/program-name-1.c

@@ -0,0 +1,7 @@
+#include <stdio.h>
+
+int main(int argc, char **argv) {
+	printf("Executable: %s\n", argv[0]);
+
+	return 0;
+}

Task/Program-name/C/program-name-2.c

@@ -0,0 +1,8 @@
+#include <stdio.h>
+
+int main()
+{
+	printf("This code was in file %s in function %s, at line %d\n",\
+		__FILE__, __FUNCTION__, __LINE__);
+	return 0;
+}

Task/Program-name/C/program-name-3.c

@@ -0,0 +1,37 @@
+/* myname.c */
+
+#include <sys/param.h>
+#include <sys/sysctl.h>	/* struct kinfo_proc */
+#include <err.h>
+#include <fcntl.h>	/* O_RDONLY */
+#include <kvm.h>
+#include <limits.h>	/* _POSIX2_LINE_MAX */
+#include <stdio.h>
+
+int
+main(int argc, char **argv) {
+	extern char *__progname;	/* from crt0.o */
+
+	struct kinfo_proc *procs;
+	kvm_t *kd;
+	int cnt;
+	char errbuf[_POSIX2_LINE_MAX];
+
+	printf("argv[0]: %s\n", argv[0]);
+	printf("__progname: %s\n", __progname);
+
+	kd = kvm_openfiles(NULL, NULL, NULL, KVM_NO_FILES, errbuf);
+	if (kd == NULL)
+		errx(1, "%s", errbuf);
+	procs = kvm_getprocs(kd, KERN_PROC_PID, getpid(),
+	    sizeof procs[0], &cnt);
+	if (procs == NULL)
+		errx(1, "%s", kvm_geterr(kd));
+	if (cnt != 1)
+		errx(1, "impossible");
+
+	printf("p_comm: %s\n", procs[0].p_comm);
+
+	kvm_close(kd);
+	return 0;
+}

Task/Program-name/C/program-name-4.c

@@ -0,0 +1,57 @@
+#include <windows.h>
+#include <stdlib.h>
+#include <wchar.h>
+
+/*
+ * Returns the path to the current executable file, in a newly
+ * allocated buffer. Use free() to free it.
+ */
+wchar_t *
+exepath(void)
+{
+	wchar_t *buf, *newbuf;
+	long blen, flen;
+
+	/*
+	 * Most paths fit in MAX_PATH == 260 characters, but very
+	 * long UNC paths might require a larger buffer.
+	 */
+	buf = NULL;
+	for (blen = MAX_PATH; 1; blen += MAX_PATH) {
+		/* Enlarge buffer. */
+		newbuf = realloc(buf, blen * sizeof buf[0]);
+		if (newbuf == NULL) {
+			free(buf);
+			return NULL;
+		}
+		buf = newbuf;
+
+		flen = GetModuleFileNameW(NULL, buf, blen);
+		if (flen == 0) {
+			free(buf);
+			return NULL;
+		}
+		if (flen < blen)
+			return buf;
+	}
+}
+
+/*
+ * Print the path to this executable.
+ */
+int
+main()
+{
+	wchar_t *path;
+
+	path = exepath();
+	if (path == NULL) {
+		wprintf(L"Sorry, an error occured.\n");
+		return 1;
+	}
+
+	wprintf(L"Path to executable: %ls\n", path);
+
+	free(path);
+	return 0;
+}