Thread: printing alphabet with malloc realloce

code:

#include "stdafx.h" #include <stdlib.h> #include <stdio.h>   int _tmain(int argc, _tchar* argv[]) { int i; char *pa;    pa[0]='a';   for(i=1;i<26;i++){     pa= (char *) realloc (pa, i+1 * sizeof(char));   pa[i]='a'+i;            } printf("%s",pa);          }

really whats problem

you don't allocate memory pa point in first place.

code:

char *pa ;

will allocate space pointer - subsequently pointing anywhere

need call malloc allocate memory segment p - before

code:

pa[0] = "a" ;

in short should :

code:

char *pa;  pa= (char *) malloc (1 * sizeof(char));  pa[0] = 'a' ;

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