取消引用结构指针内的指针

就像任何指针一样。改变 地址 它指出:

struct_inst->pointer = &var;

改变 价值 地址:

*(struct_inst->pointer) = var;

您正在创建mystruct类型的指针,我想您可能不需要指针:

int x;
struct mystruct mystruct_inst;
mystruct_inst.pointer = &x;
*mystruct_inst.pointer = 33;

如果需要堆上的mystrut指针,请执行以下操作:

int x;
struct mystruct *mystruct_inst = malloc(sizeof(struct mystruct));
mystruct_inst->pointer = malloc(sizeof(int));
*(mystruct_inst->pointer) = 33;  

/*Sometime later*/

free(mystruct_inst->pointer);
free(mystruct_inst);