tweak in print_usage

src/param.c

@@ -28,12 +28,18 @@ void print_usage() {
     "                   If nothing is specified, the current directory is used\n"
     "<-pose>............Desired conformation. Default will compute all conformations\n"
     "<--atom-res>.......If specified, will computed the interface at atom level\n"
-    "<-HCMD2>...........Means that the docking file is in the HCMD2 MAXDo format\n"
-    "<-MAXDo>...........Means that the docking file is in the original MAXDo format\n"
     "<-noOutput>........Will prevent the program to output the docking interface\n"
     "                   Useful if you only want to use the '-outputPDB' option\n"
     "<--force/-f>.......Will force the computation of the pause even in case of\n"
     "                   huge number of clashes (threshold defined in struct.h)\n"
+    "--\n"
+    "Leaving this option blank means that the default format for the docking file\n"
+    "will be used.\n"
+    "<-HCMD2>...........Means that the docking file is in the HCMD2 MAXDo format\n"
+    "OR\n"
+    "<-MAXDo>...........Means that the docking file is in the original MAXDo format\n"
+    "OR\n"
+    "<-HEX>.............Means that the docking file is in the HEX format\n"
     );
 }
 
@@ -145,6 +151,13 @@ struct argLine* parseLineOfArgument(int argc, char** argv){
         }
     }
 
+    if(MAXDo + HCMD2 + HEX > 1){
+        fprintf(stderr,"You must choose only one mode out of the three 'MAXDo', 'HCMD2' and 'HEX'\n");
+        if(!print_help)
+            print_usage();
+        exit(EXIT_SUCCESS);
+    }
+
     if(dockingFile == NULL && !complexPDB){
         fprintf(stderr,"The docking file has to be provided\n\n");
         if(!print_help)