/*So im trying to learn structs and ive hit a roadblock, in particular, added entries just somehow doesnt get saved or displayed over when display_entries is called Help is appreciated, thanks! */ #include #include #include struct student{ char name[30]; float mid; float fin; float result; }; void display_entries(int num, struct student *ptr); void add_entries(int *add, struct student *ptr); int main() { int add, choice; struct student records[20]; //Number of entries printf("Input number of entries to add : "); scanf("%d", &add); //Initial Records for (int i = 0; i < add; i++) { printf("\nStudent first name : "); scanf("%s", records[i].name); printf("Midterm Grade : "); scanf("%f", &records[i].mid); printf("Final Grade : "); scanf("%f", &records[i].fin); } //Selection Process do { printf("\n\nSelect an Option : \n"); printf("\n0 - Display Student Records"); printf("\n1 - Add Student Entries"); /* My next course of actions xD printf("\n2 - Edit Student Record"); printf("\n3 - Delete Student Record"); */ printf("\n4 - Exit Program"); printf("\n\nChoose an option : "); scanf("%d", &choice); switch (choice) { case 0: printf("\n\nDISPLAYING ENTRIES"); display_entries(add, &records); break; case 1: printf("\n\nADDING ENTRIES"); add_entries(&add, &records); case 4: printf("\nThanks for using this program! \n"); break; default : printf("\nInput error. Try Again."); } } while (choice != 4); return 0; } void display_entries(int num,struct student *ptr){ char confirm; int sort; struct student temp; printf("\n\n================================="); do{ printf("\n\nSort by : "); printf("\n\t 1 - Name"); printf("\n\t 2 - Final Grade\n"); scanf("%d", &sort); //Sorting Options if (sort == 1) { for (int i = 0; i < num ; i++) { for (int j = i + 1; j < num ; j++) { if (strcmp((ptr + i)->name, (ptr + j)->name) > 0) { temp = *(ptr + i); *(ptr + i) = *(ptr + j); *(ptr + j) = temp; } } } } else if (sort == 2){ for (int i = 0; i < num; i++) { for (int j = i + 1; j < num ; j++) { if ((ptr + i)->result < (ptr + j)->result) { temp = *(ptr + i); *(ptr + i) = *(ptr + j); *(ptr + j) = temp; } } } } else printf("\nError. Try Again.\n"); } while(sort != 1 && sort != 2); printf("No.\tName\tMid\tFinal\tResult"); printf("\n\n================================="); for (int i = 0; i < num; i++) { printf("\n%2d", i+1); printf("%10s", (ptr+i)->name); printf("%8.2f", (ptr+i)->mid); printf("%8.2f", (ptr+i)->fin); (ptr + i)->result = ((ptr + i)->mid + (ptr +i)->fin)/2; printf("%8.2f", (ptr+i)->result); } printf("\n\nReturning...."); printf("\nInput anything to continue : "); scanf("%c", &confirm); getchar(); } void add_entries(int *add, struct student *ptr) { char confirm, addname[30]; int num, limit; float addmid, addfin; printf("\n\n================================="); do { printf("\n\nInput number of new entries to add : "); scanf("%d", &num); if((add + num) > 20) { printf("\nLimit Reached. Maximum of 20 entries allowed"); } } while(add + num < 20); limit = *add + num; for (int i = *add; i < limit; i++) { printf("\nStudent first name : "); scanf("%s", (ptr + i)->name); printf("Midterm Grade : "); scanf("%f", &addmid); (ptr + i)->mid = addmid; printf("Final Grade : "); scanf("%f", &addfin); (ptr + i)->fin = addfin; /* Commented just to check whether it works here printf("\n%s", (ptr + i)->name); printf("\n%.2f", (ptr + i)->mid); printf("\n%.2f", (ptr + i)->fin); */ } *add += num; display_entries(add, &ptr); printf("\n\nReturning...."); printf("\nInput anything to continue : "); scanf("%c", &confirm); getchar(); }

PlayingAroundwithStructs