Began removing sprintf...

src/atmesc.c

@@ -957,7 +957,7 @@ void InitializeOptionsAtmEsc(OPTIONS *options, fnReadOption fnRead[]) {
   options[OPT_ATMXABSEFFH2OMODEL].iType      = 3;
   options[OPT_ATMXABSEFFH2OMODEL].bMultiFile = 1;
   fnRead[OPT_ATMXABSEFFH2OMODEL]             = &ReadAtmXAbsEffH2OModel;
-  sprintf(options[OPT_ATMXABSEFFH2OMODEL].cLongDescr,
+  fvFormattedString(&options[OPT_ATMXABSEFFH2OMODEL].cLongDescr,
           "If BOLMONT16 is selected, then the value of %s will follow the "
           "model of\n"
           "Bolmont et al. (2017, MNRAS, 464, 3728). NONE will not change the "

src/control.c

@@ -867,6 +867,33 @@ void fprintd(FILE *fp, double x, int iExp, int iDig) {
   }
 }
 
+void fvFormattedString(char **sString,const char* sFormattedString, ...) {
+  va_list vaArgs;
+  va_start(vaArgs, sFormattedString);
+
+  va_list vaArgsCopy;
+  va_copy(vaArgsCopy, vaArgs);
+
+  // Determine the length of the formatted string
+  int iString = vsnprintf(NULL, 0, sFormattedString, vaArgs);
+
+  // Allocate memory for the string
+  *sString = (char*)malloc((iString + 1) * sizeof(char));
+  if (*sString == NULL) {
+    va_end(vaArgs); 
+    va_end(vaArgsCopy); 
+    fprintf(stderr,"ERROR: Unable to create formatted string in functionfvWriteString.\n");
+    exit(EXIT_EXE);
+  }
+
+  // Fill the string with the formatted data using the copied va_list
+  vsnprintf(*sString, iString + 1, sFormattedString, vaArgsCopy);
+
+  va_end(vaArgs); // Clean up the original va_list
+  va_end(vaArgsCopy); // Clean up the copied va_list
+}
+
+
 /*
  * Unit Conversions
  */

src/control.h

@@ -26,6 +26,7 @@ void Help(OPTIONS *, OUTPUT *, char[], int);
 void LineExit(char[], int);
 char *sLower(char[]);
 void fprintd(FILE *, double, int, int);
+void fvFormattedString(char**,const char*, ...);
 
 double fdUnitsLength(int);
 double fdUnitsTime(int);

src/vplanet.h

@@ -12,6 +12,7 @@
 #include <math.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <stdarg.h>
 #include <string.h>
 #include <sys/stat.h>
 #include <sys/types.h>