fork(1) download

copy

int main() {
    const char constant = 'A';
 
/* Pointer itself is modifiable, referenced value is immutable */
    const char *ptr1 = &constant;
    *ptr1 = 'B';
 
/* Pointer itself is immutable, referenced value is modifiable */
    char * const ptr2 = &constant;
    *ptr2 = 'C';
 
/* Alternate form for case 2 */
    typedef char* PChar;
    const PChar ptr3 = &constant;
    *ptr3 = 'D';
 
    return 0;
}

prog.c: In function ‘main’:
prog.c:6: error: assignment of read-only location ‘*ptr1’
prog.c:9: warning: initialization discards qualifiers from pointer target type
prog.c:14: warning: initialization discards qualifiers from pointer target type

Standard output is empty