c++ - What does “request for member '*******' in something not a structure or union” mean? -

is there easy explanation error means?

#include <stdio.h> #include <string.h>   struct student {         char surname[30];         char name[30];         int age;         char address[10];  };  int main(){      int i;      char temp1;      char temp2;      int temp3;;      char temp4;      struct student x[2];      for(i=1; i<3; i++){               struct student x[i];              printf(" surname of student %s:", i);              scanf("%s",&temp1);              printf(" other names of student %s:", i);              scanf("%s",&temp2);              printf(" age of student %s:", i);              scanf("%s",&temp2);              printf(" address of student %s:", i);              scanf("%s",&temp3);              strcpy(x->surname,&temp1);              strcpy(x->name,&temp2);              //x[i].surname=temp1;              //x[i].name=temp2;              x[i].age=temp3;              //x[i].address=temp4;              strcpy(x->address,&temp4);               }      int temp;      if (x[1].age > x[2].age){                      temp = 1;                      printf(x.surname[temp]);                      printf(x.name[temp]);                      printf(x.age[temp]);                      printf(x.address[temp]);                   }      else if(x[1].age < x[2].age){                      temp = 2;                      printf(x.surname[temp]);                      printf(x.name[temp]);                      printf(x.age[temp]);                      printf(x.address[temp]);                   }      else{                      printf(x.surname[1]);                      printf(x.name[1]);                      printf(x.age[1]);                      printf(x.address[1]);                       printf(x.surname[2]);                      printf(x.name[2]);                      printf(x.age[2]);                      printf(x.address[2]);                        }       return 0;          }; 

im getting error request member `surname' in not structure or union... print lines... can please me this? im new c programming....

change

                 printf(x.surname[temp]); 

to

                 printf(x[temp].surname); 

whether x pointer or array, can't take struct member out of it.

there's other weirdness in code. particularly here:

 struct student x[2]; // array never receives data because other x shadows  for(i=1; i<3; i++){           struct student x[i]; // declaration shadows earlier declaration 

my guess intended more like

 struct student x[2];  for(i=0; i<2; i++){           struct student *ptr = &x[i]; 

then usage of arrow operator -> make more sense, too.

also, problem:

                 printf(x.age[temp]); 

even after fix struct access to

                 printf(x[temp].age); 

you can't pass integer printf that. string can serve format string, integer must give format specification in string.

                 printf("%d", x[temp].age);