Why My C program is not working properly

Question

#include <stdio.h>
typedef struct students {
char name[20];
int id;
} s1;
int main(){
s1 detail[3];
for(int i=0;i < 3;i++){
printf("Enter Student %d Name : ",i+1);
gets(detail[i].name);
printf("Enter Student %d id : ",i+1);
scanf("%d",&detail[i].id);
}

for(int i=0;i < 3;i++){
printf("Student %d Name is : %s",i+1, detail[i].name);
printf("Student %d id is : %d\n",i+1, detail[i].id);
}
return 0;
}
// In this program when you get second or third time name or any character it will not take why
// When I take char array with scanf it works but with scanf we can't take spaces or full name
// When you take only character array in for loops gets function working properly
// Why this function is not working in when I use multiple data type
// Please tell me

Answer 1

1. Wrong header filename
#include <stdio.h> // #include <studio.h>

2. Use `fgets` instead of `gets`
fgets(detail[i].name, 20, stdin); // gets(detail[i].name);

3. Add `getchar();` after reading student's ID. This will consume the new line character '\n' that was left behind in the input stream after reading the student's ID.
scanf("%d",&detail[i].id);
getchar();