#include "mbed.h"
Serial wifi(p28, p27);

int //the list is a bit long but all varaible are declared as integer

void Mod()
{   
    int Confirm; //use to confirm if it is the desired input
    Confirm=0;
    do
    {   
        fflush(stdin);
        FHz = 0;
        wifi.printf("\r\nFertilizing frequency in hrs?\r\n");   
        while(FHz == 0)
        {   
            fflush(stdin);
            wifi.scanf("%d", &FHz);
            wifi.getc();
            if(FHz == 0)
            {   wifi.printf("\r\nPlease enter the frequency again\r\n");
            }
            
        }
        wifi.printf("\r\nThe fertilizer frequency is %d hrs? If not enter 1, if yes enter 0\r\n", FHz);
        wifi.scanf("%d", &Confirm);
        wifi.getc();
        Min1=FHz*60;
    }while(Confirm==1);
    Confirm=0;

// the exact same thing is repeated for 3 otherr variable and ended with the following code

...
    wifi.printf("\r\nTo make any changes to the value input the word mod into tera term\r\n");
    mod2=0;

void Menu()//below is a portion of the menu function that deal with mod function
{   
    char Text[100];
    wifi.scanf("%s", &Text);
    wifi.getc();
 char Mod[4] ="Mod";
    if (strcasecmp(Mod,Text) == 0)
    {   
        if(Process==0)
        {
            mod2=1;
        }
        else
        {
            wifi.printf("System is in operation, change of variable is locked . Please try again later.\r\n");
        }
    }     


//following is the main prorgam

 int main() 
        { 
            // Main program
            //Intialization State
            PHY_PowerDown();//Ethernet powerdown
            result = semihost_powerdown();//USB power down (Note need new firmware)
            set_time(NULL);
            Close.fall(&ULS);
            //insert code for drawing of data
            char start[100];
            char Boot[5] = "Boot";
            while(1)
            {       fflush(stdin);
                    void flush();
                    wifi.scanf("%s", &start);
                    wifi.getc();
                    if (strcasecmp(Boot,start) == 0)
                        {
                            wifi.printf("\r\nBooting System, please standby\r\n");
                             // wait(3);
                            wifi.printf("All system green\r\n");
                            wifi.printf("Please input the following variables\r\n");
                            Mod();
                            Ready=2;
                        }
                    while(Ready==2)
                 {
                    if (Prevent==0) 
                    {
                        FT.attach(Fert,180);
                        MT.attach(Moist,1200);
                        wifi.attach(&Menu);
                        Prevent=1;
                    }
                    if(mod2==1)
                    {
                        fflush(stdin);
                        Mod();
                    }
                Sleep();
                }
            }
    }

using the wifly and the mbed i encounter yet another odd problem. The problem is that the 2nd time function "Mod" was call , the scanf was unable to accept any input value ... the code is as follow <<code>> #include "mbed.h" Serial wifi(p28, p27); int //the list is a bit long but all varaible are declared as integer void Mod() { int Confirm; //use to confirm if it is the desired input Confirm=0; do { fflush(stdin); FHz = 0; wifi.printf("\r\nFertilizing frequency in hrs?\r\n"); while(FHz == 0) { fflush(stdin); wifi.scanf("%d", &FHz); wifi.getc(); if(FHz == 0) { wifi.printf("\r\nPlease enter the frequency again\r\n"); } } wifi.printf("\r\nThe fertilizer frequency is %d hrs? If not enter 1, if yes enter 0\r\n", FHz); wifi.scanf("%d", &Confirm); wifi.getc(); Min1=FHz*60; }while(Confirm==1); Confirm=0; // the exact same thing is repeated for 3 otherr variable and ended with the following code ... wifi.printf("\r\nTo make any changes to the value input the word mod into tera term\r\n"); mod2=0; void Menu()//below is a portion of the menu function that deal with mod function { char Text[100]; wifi.scanf("%s", &Text); wifi.getc(); char Mod[4] ="Mod"; if (strcasecmp(Mod,Text) == 0) { if(Process==0) { mod2=1; } else { wifi.printf("System is in operation, change of variable is locked . Please try again later.\r\n"); } } //following is the main prorgam int main() { // Main program //Intialization State PHY_PowerDown();//Ethernet powerdown result = semihost_powerdown();//USB power down (Note need new firmware) set_time(NULL); Close.fall(&ULS); //insert code for drawing of data char start[100]; char Boot[5] = "Boot"; while(1) { fflush(stdin); void flush(); wifi.scanf("%s", &start); wifi.getc(); if (strcasecmp(Boot,start) == 0) { wifi.printf("\r\nBooting System, please standby\r\n"); // wait(3); wifi.printf("All system green\r\n"); wifi.printf("Please input the following variables\r\n"); Mod(); Ready=2; } while(Ready==2) { if (Prevent==0) { FT.attach(Fert,180); MT.attach(Moist,1200); wifi.attach(&Menu); Prevent=1; } if(mod2==1) { fflush(stdin); Mod(); } Sleep(); } } } <</code>> the error is that when I type in mod after the first call of mod , it is able to bring up the function . however any input I type will either yield A)no respond or B) print "Please enter the frequency again" i trying to fflush(stdin) to see if it will resolve it but it dint seem to work ~ could anyone advice me on what is wrong ? P.S : if it lacking detail do let me know thanks again for your help