Fix incorrect return type of get_flag

Author: Kyrylo

examples/c/include/utils/utils.h

@@ -11,6 +11,6 @@ scanbotsdk_error_code_t print_generic_document_fields(scanbotsdk_generic_documen
 
 void print_usage(const char *prog);
 
-char* get_flag(int argc, char *argv[], const char *flag);
+const char* get_flag(int argc, char *argv[], const char *flag);
 
 #endif

examples/c/src/main.c

@@ -33,10 +33,10 @@ int main(int argc, char *argv[]) {
 
     char *category   = argv[1];
     char *command    = argv[2];
-    char *file_path  = get_flag(argc, argv, "--file");
-    char *save_path  = get_flag(argc, argv, "--save");
-    char *text_input = get_flag(argc, argv, "--text");
-    char *license_arg = get_flag(argc, argv, "--license");
+    const char *file_path  = get_flag(argc, argv, "--file");
+    const char *save_path  = get_flag(argc, argv, "--save");
+    const char *text_input = get_flag(argc, argv, "--text");
+    const char *license_arg = get_flag(argc, argv, "--license");
     bool use_tensor_rt = get_flag(argc, argv, "--use_tensorrt") != NULL; // live only, tensor accelerator
 
     // TODO Add your Scanbot SDK trial license key here.