Fill in the following program so that it will open the input file, populate the array with your roommate's customer information, and respond to commands of 1, 2, or 3 from the file.

#include

#define MAX_CUSTOMERS 100

int main() {

int numCommands, i, accounts[ MAX_CUSTOMERS ]; int command, id, amount, j, ok;

char filename[ 20 ];

[ Select ] ["FILE ifp", "FILE *ifp;", "file *ifp;", "f* ifp;"]

printf("What is the name of the file? ");

scanf("%s", filename); [ Select ] ["ifp = fopen(filename, "r");", "ifp = fopen("filename", "r");", "ifp = fopen(filename, "w");", "fopen(filename, "r");"]

[ Select ] ["for(i=0; i<10; i++)", "for(i=0; i 100)"]

[ Select ] ["accounts = 0;", "accounts[0..100] = 0;", "amount = 0;", "accounts[i] = 0;"]

fscanf(ifp, "%d", &numCommands);

for (i=0; i

[ Select ] ["fscanf(ifp, "%d", &command);", "fscanf("%d", &command);", "fscanf(ifp, "%d", command);", "fscanf(ifp, "%d", &amount);", "fprintf(ifp, "%d", &command);", "fprintf("%d", &command);", "fprintf(ifp, "%d", command);", "fprintf(ifp, "%d", amount);"]

if (command == 1) {

[ Select ] ["fscanf(ifp, "%d", id);", "fscanf(ifp, "%d %d", &id, &amount);", "fscanf(ifp, "%d", &amount);", "fscanf(ifp, "%d", &amount);", "fprintf(ifp, "%d", &id);", "fprintf(ifp, "%d %d", &id, &amount);", "fprintf("%d", &id);", "fprintf(ifp, "%d", amount);"]

accounts[ id ] += amount;

}

else if (command == 2) {

fscanf(ifp, "%d %d", &id, &amount);

[ Select ] ["amount = accounts[id];", "accounts[id] = amount;", "accounts[id] -= amount;", "accounts[id] += amount;"]

}

else {

ok = 1;

for (j=0; j

if ( [ Select ] ["j < 0", "accounts[j] < 0", "accounts < 0", "accounts[ 0 ] < j"] ) {

printf("Customer %d, you owe $%d. Please pay immediately! ", j, -accounts[ j ]);

ok = 0;

}

}

if (ok)

printf("All accounts are paid up to date!!! ");

}

}

[ Select ] ["fclose(ifp);", "fclose(filename);", "fclose("ifp");", "fileclose(ifp);"]

return 0;

}