Add "examples/snprintf[_va].c"

.gitignore

@@ -92,6 +92,8 @@
 /examples/pfa
 /examples/printf
 /examples/printf_va
+/examples/snprintf
+/examples/snprintf_va
 /examples/units_human
 
 /tests/multiboot2_header_print1

Makefile.am

@@ -113,6 +113,8 @@ if ENABLE_TESTS
 TESTS += \
 	examples/printf \
 	examples/printf_va \
+	examples/snprintf \
+	examples/snprintf_va \
 	tests/test_printf
 endif
 endif
@@ -150,6 +152,14 @@ examples_printf_va_SOURCES = \
 	$(libkernaux_a_SOURCES) \
 	examples/printf_va.c
 
+examples_snprintf_SOURCES = \
+	$(libkernaux_a_SOURCES) \
+	examples/snprintf.c
+
+examples_snprintf_va_SOURCES = \
+	$(libkernaux_a_SOURCES) \
+	examples/snprintf_va.c
+
 examples_units_human_SOURCES = \
 	$(libkernaux_a_SOURCES) \
 	examples/units_human.c

README.md

@@ -60,9 +60,8 @@ API
     * Code from [https://github.com/mpaland/printf](https://github.com/mpaland/printf). Thank you!
     * [printf](/examples/printf.c)
     * [vprintf](/examples/printf_va.c)
-    * `snprintf`
-    * `vsnprintf`
-    * `sprintf`
+    * [snprintf](/examples/snprintf.c)
+    * [vsnprintf](/examples/snprintf_va.c)
 
 
 

examples/snprintf.c

@@ -0,0 +1,22 @@
+#include <kernaux/printf.h>
+
+#include <assert.h>
+#include <string.h>
+
+#define BUFFER_SIZE 1024
+
+static char buffer[BUFFER_SIZE];
+
+int main()
+{
+    const int result = kernaux_snprintf(
+        buffer,
+        sizeof(buffer),
+        "Hello, %s! Session ID: %u.",
+        "Alex",
+        123
+    );
+    assert((size_t)result == strlen(buffer));
+    assert(strcmp(buffer, "Hello, Alex! Session ID: 123.") == 0);
+    return 0;
+}

examples/snprintf_va.c

@@ -0,0 +1,25 @@
+#include <kernaux/printf.h>
+
+#include <assert.h>
+#include <string.h>
+
+#define BUFFER_SIZE 1024
+
+static char buffer[BUFFER_SIZE];
+
+static int my_snprintf(const char *const format, ...)
+{
+    va_list va;
+    va_start(va, format);
+    const int result = kernaux_vsnprintf(buffer, sizeof(buffer), format, va);
+    va_end(va);
+    return result;
+}
+
+int main()
+{
+    const int result = my_snprintf("Hello, %s! Session ID: %u.", "Alex", 123);
+    assert((size_t)result == strlen(buffer));
+    assert(strcmp(buffer, "Hello, Alex! Session ID: 123.") == 0);
+    return 0;
+}