#include<stdio.h>
#include<string.h>
char *substring(int i,int j,char *ch);

int main()
{
 int i=0,j=2;
 char s[]="String";
char *test;
test=substring(i,j,s);   
printf("%s",test);
return 0;

}


char *substring(int i,int j,char *ch)
{
int m,n,k=0; 
char *ch1;
ch1=(char*)malloc((j-i+1)*1);
n=j-i+1;

while(k<n)
{   
    ch1[k]=ch[i];
    i++;k++;

}   

return (char *)ch1;
}