pic microcontroller port pins changing

Code C - [expand]
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#include<pic.h>
#define _XTAL_FREQ 10000000
void lcd_cmd(unsigned char cmd)
{
    PORTB=cmd;
    PORTDbits.RD0=0;
    PORTDbits.RD1=0;
    PORTDbits.RD2=1;
    __delay_ms(1);
        PORTDbits.RD2=0;
}
 
 
void lcd_data(unsigned char dat)
{
    PORTB=dat;
    PORTDbits.RD0=1;
    PORTDbits.RD1=0;
    PORTDbits.RD2=1;
    __delay_ms(1);
    PORTDbits.RD2=0;
}
 
 
void lcd_ini()
{
    lcd_cmd(0x38);
    lcd_cmd(0x01);
    lcd_cmd(0x80);
    lcd_cmd(0x0c);
}
 
 
void lcd_str(unsigned char *p)
{
    while(*p != '\0')
    {
        lcd_data(*p);
        p++;
    }
}
void str(unsigned char x)
{
SSPCON2|=x;   //star condition
while((PIR1&0x08)==0x00);  //polling
PIR1&=~0x08;             //clear flag
}
 
void add(unsigned char x)
{
SSPBUF=x;             //slave addrs
while((PIR1&0x08)==0x00);
PIR1&=~0x08;
}
void main(){
unsigned char s[]={"sumit"};
int i;
TRISC=0xff;
SSPCON=0X28;        //enable +mode
PORTC=0xff;
lcd_ini();
SSPADD=24;        //baud rate
SSPSTAT=0X80;    //slew rate
 
str(0x01);
for(i=0;i<5;i++)
{
add(s[i]);
}
str(0x04);
while(1);
}