"Implicit declaration" warning
- by gcc
For this code:
int i=0; char **mainp;
for(i=0;i<2;++i)
{
mainp[i]=malloc(sizeof(char)*200);
if(!scanf("%[^#],#",mainp[i]))
break;
if(i<2)
scanf("%[^#],#",mainp[i]);
}
GCC emits the warnings:
warning: implicit declaration of function ‘scanf’
warning: incompatible implicit declaration of built-in function ‘scanf’
warning: ‘mainp’ may be used uninitialized in this function
And I get a segmentation fault at runtime
