Something

#include <stdio.h>
#include <string.h>

int i;
int j;
char port1[10];
char port[10];
char port2[10];

struct flight_data {
	int flightnum;
	char origin[1000];
	char destination[1000];
	int d_time_hour;
	int d_time_minute;
	int a_time_hour;
	int a_time_minute;
};

struct flight_data flight[10000];


int main(){
void print_structure();
void initialize_structure(void);

initialize_structure();
for (i = 0; i < 4; ++i)
	print_structure(i);

printf("Enter the first Airport Code.\n");
fgets(port1,sizeof(port1),stdin);
sscanf(port1,"%s",&port1);

printf("Enter the second Airport Code.\n");
fgets(port2,sizeof(port2),stdin);
sscanf(port2,"%s",&port2);

for (j = 0; j < 4; ++j){
	if ((strcmp(port1,flight[0].origin) == 0) || (strcmp(port2,flight[0].origin) == 0)){
		printf("That's true\n");
		print_structure(j);
}
}
return(0);
}