C languageDebug this code

#include

#include

#define SIZE (10)

typedef struct _debugLab

{

int i;

char c;

} debugLab;

// Prototypes

void PrintUsage(char *);

void DebugOption1(void);

void DebugOption2(void);

void DebugOption3(void);

int DebugOption4(int *arr, int n);

int main(int argc, char **argv)

{

int option = 0;

int sum = 0;

int arr[] = { 1, 2, 3, 5, 7, 11, 13, 17, 19 }; // Sum equals 78

if (argc == 1)

{

PrintUsage(argv[0]);

exit(0);

}

option = atoi(argv[1]);

if (option == 1)

{

DebugOption1();

}

else if (option == 2)

{

DebugOption2();

}

else if (option == 3)

{

DebugOption3();

}

else if (option == 4)

{

sum = DebugOption4(arr, 9);

fprintf(stdout, "The sum of the values in the array \"arr\" is: %d ", sum);

}

else

{

PrintUsage(argv[0]);

exit(0);

}

}

void PrintUsage(char *command)

{

fprintf(stderr, "Usage: %s [1 2 3 4] ", command);

fprintf(stderr, " 1 = Mode 1 ");

fprintf(stderr, " 2 = Mode 2 ");

fprintf(stderr, " 3 = Mode 3 ");

fprintf(stderr, " 4 = Mode 4 ");

}

void DebugOption1()

{

int i, j;

int sum = 0;

char charArray[SIZE];

fprintf(stdout, "Here we are in DebugOption1() ");

for (i = 0; i < SIZE; i++)

{

sum += sum + i;

}

fprintf(stdout, "The sum of integers from 0 to %d is: %d ", SIZE, sum);

}

void DebugOption2()

{

char num;

int i, j;

for (i = 0; i < 25; i++)

{

num = 0;

for (j = 0; j <= i; j++)

{

num += j;

}

fprintf(stdout, "The sum of the numbers from 0 to %d is: %d ", i, num);

}

}

void DebugOption3()

{

debugLab *dl1 = NULL;

debugLab *dl2 = malloc(sizeof(debugLab)); // Always check for a NULL Pointer after a call to malloc

debugLab dl3;

dl3.i = 37;

dl3.c = 'A';

dl2->i = 36;

dl2->c = 'B';

dl1->i =35; // Oops! dl1 is NULL!

dl1->c = 'C';

}

int DebugOption4(int *arr, int n)

{

int i;

int sum=0;

for (i=0;1

sum += arr[i];

return sum;

}