SNPRINTF cannot use a "string pointer" assignment, you can use a character array

#cat snprintf.c#include <stdio.h>#include <stdlib.h>#include <string.h>struct student{    int age;    char *name;};int main(void){    /*t1 结构体指针*/    struct student *t1;    t1 = malloc(sizeof(struct student));    t1->age = 11;    t1->name = "ahao.mah";    /*t2 结构体变量*/    struct student t2;    t2.name = "jack";    t2.age = 22;    printf("t1:%s\n", t1->name);    printf("t2:%s\n", t2.name);    /*snprintf不能使用字符串指针赋值*/    char *a;    char *dev = t1->name;    /*可以使用字符串数组*/    //char dev[10];    //strcpy(dev, t1->name);    printf("dev:%s\n", dev);    sprintf(a, "/dev/%s", dev);    printf("a:%s\n", a);    return 0;}

SNPRINTF cannot use a "string pointer" assignment, you can use a character array