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ungarson/example.c

Created December 25, 2019 19:04
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Struct with dynamic memory allocation in c
Raw
example.c
#include <stdio.h>
#include <stdlib.h>
struct course {
int mark;
char subject[30];
} mark;
struct course *ptr; // we don't allocate memory at that point because we don't know amount yet
int numberOfRecords;
int main() {
printf("Enter amount of courses: ");
scanf("%d", &numberOfRecords);
ptr = (struct course*) malloc(numberOfRecords * sizeof(struct course)); // allocating here
for (register int i = 0; i < numberOfRecords; i++) {
printf("Enter the course name and the mark: ");
scanf("%s %d", &(ptr + i)->subject, &(ptr + i)->mark);
}
printf("\nResult:\n");
for (register int i = 0; i < numberOfRecords; i++) {
printf("%s\t%d\n", (ptr + i)->subject, (ptr + i)->mark);
}
return 0;
};
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