first letter in word to caps

#include
#include
#include
/* Write a Program to in which
* the given strings like str []
* ="second week test exercise" should be outputted as
* “Second Week Test Exercise”.
* WITOUT USING ANY STANDARD FUNCTION*/
int main()
{
char str[]="second week test exercise";
int i=0;
int j=0;
while(str[i]!='\0')
{
i++;
}
printf("length of the string %d \n",i);
str[0]=str[0]-32;
while(j<=i)
{
if(str[j]==' ')
{
str[j+1]=str[j+1]-32;
}j++;
}
printf("%s",str);
getch();
return 0;
}