| ??? 11/21/07 11:37 Read: times |
#147303 - helpfull ,thanks, but.. Responding to: ???'s previous message |
Thank You Bret,
As i read pointers are wonderland. Bellow is code which is compiled ok by arm-gcc and rejected by IAR. What i want at end is to execute routine pointed at end of "for" cicle by pointer myfuncptr. Now i'm downloading IAR-EW for arm and will try , but suppose - errors will be same.
#define __MAIN_C__
const char mychar1[6]="ABCDEF";
const char *mycharptr;
int mymode;
void xgetstr1(void);
void xgetstr2(void);
typedef struct
{int mode;
void *funcptr1;
const void *funcptr2;
} myoneset;
void xgetstr1(void){ mycharptr=&mychar1[0];}
void xgetstr2(void){ mycharptr=&mychar1[1];}
myoneset listofsets[2] =
{{1,&xgetstr1,&xgetstr2}, {3,&xgetstr2,&xgetstr1}};
// Error[Pe144]: a value of type "void (*)(void)" cannot be used to initialize an entity of type "void *"
// Error[Pe144]: a value of type "void (*)(void)" cannot be used to initialize an entity of type "void const *"
// Error[Pe144]: a value of type "void (*)(void)" cannot be used to initialize an entity of type "void *"
// Error[Pe144]: a value of type "void (*)(void)" cannot be used to initialize an entity of type "void const *"
int main (void)
{
const void *myfuncptr;
int i ;
mycharptr=&mychar1[0];
mycharptr=&mychar1[2];
myfuncptr=&xgetstr1;
//Error[Pe513]: a value of type "void (*)(void)" cannot be assigned to an entity of type "void const *"
myfuncptr=listofsets[0].funcptr1;
myfuncptr=listofsets[1].funcptr2;
myfuncptr=0;
mymode=2;
for (i=0;i<2;i++)
{if (listofsets[0].mode==mymode)
{myfuncptr=listofsets[1].funcptr2;};
}
return(0);
}
regards |
| Topic | Author | Date |
| Sequence of learning 8051, asm and C | 01/01/70 00:00 | |
| 2 Issues | 01/01/70 00:00 | |
| my wrong path | 01/01/70 00:00 | |
| OT, but | 01/01/70 00:00 | |
| OT - error message | 01/01/70 00:00 | |
| Use the tags | 01/01/70 00:00 | |
| single-character const | 01/01/70 00:00 | |
| QED? | 01/01/70 00:00 | |
| As Erik suggests | 01/01/70 00:00 | |
| Just learning - too luxury. | 01/01/70 00:00 | |
| how can that be "too luxorious" | 01/01/70 00:00 | |
| Foolish builder? | 01/01/70 00:00 | |
| pointer to a const | 01/01/70 00:00 | |
| True, but... | 01/01/70 00:00 | |
| Explaining | 01/01/70 00:00 | |
| helpfull ,thanks, but.. | 01/01/70 00:00 | |
| Declaration | 01/01/70 00:00 | |
| thanks | 01/01/70 00:00 | |
| Adjust declaration | 01/01/70 00:00 | |
thanks again | 01/01/70 00:00 | |
| const | 01/01/70 00:00 | |
| no wrong path | 01/01/70 00:00 | |
| learning C | 01/01/70 00:00 | |
| Freebies | 01/01/70 00:00 | |
| Erik is right | 01/01/70 00:00 | |
| not necessary | 01/01/70 00:00 | |
| You\'re skipping the most important step ... | 01/01/70 00:00 |



