int str2int(char *str){
//printf("%s\n", str);
int tam = strlen(str);
//printf("%d\n", tam);
int sum = 0;
int i;
//printf("\n%d\n", tenPow(4));
for(i = tam-1; i > 0; i--){
//printf("%c %d %d\n", str[i], char2int(str[i]), tenPow(tam-1-i));//(tam-1-i)
sum += (char2int(str[i]) * tenPow(tam-1-i));
}
if(str[i] == '-')
sum *= -1;
else
sum += (char2int(str[i]) * tenPow(tam-1));
//printf(">%d<\n", sum);
return sum;
}
int tenPow(int num)
{
if (num == 0)
return 1;
else
return(10 * tenPow(num - 1));
}
int isGreater(char *date1, char* date2)
{
int i, p = 0;
int temp1 = 0, temp2 = 0, count = 1;
//checking for year
for (i = 9, p = 0; i >= 6; i--, p++)
{
temp1 += (date1[i] - '0') * tenPow(p);
temp2 += (date2[i] - '0') * tenPow(p);
}
//printf("%d,%d", temp1,temp2);
if (temp1>temp2)
return 1;
else if (temp1<temp2)
return -1;
else
{
//checking for month
for (i = 4, p = temp1 = temp2 = 0; i >= 3; i--, p++)
{
temp1 += (date1[i] - '0') * tenPow(p);
temp2 += (date2[i] - '0') * tenPow(p);
}
if (temp1>temp2)
return 1;
else if (temp1<temp2)
return -1;
else
{
//checking for date
for (i = 1, p = temp1 = temp2 = 0; i >= 0; i--, p++)
{
temp1 += (date1[i] - '0') * tenPow(p);
temp2 += (date2[i] - '0') * tenPow(p);
}
if (temp1>temp2)
return 1;
else if (temp1<temp2)
return -1;
else
return 0;
}
}
}
int tenPow(int i){
if(i == 0)
return 1;
else
return 10 * tenPow(i-1);
}
int dateCheck(char *dateInput, int len,int *date,int *month,int *year)
{
int flag, place;
for (place = 0, flag = len - 1; dateInput[flag] != '-'&&flag >= 0; flag--, place++)
{
(*year) += tenPow(place)*(dateInput[flag] - '0');
}
if (numofDig((*year)) != 4)
{
//puts("Invalid format");
return(-1);
}
for (place = 0, flag = flag - 1; dateInput[flag] != '-'&&flag >= 0; flag--, place++)
{
(*month) += tenPow(place)*(dateInput[flag] - '0');
}
if ((*month) <= 0 || (*month) > 12)
{
//puts("Invalid Date");
return(-1);
}
for (place = 0, flag = flag - 1; dateInput[flag] != '-'&&flag >= 0; flag--, place++)
{
(*date) += tenPow(place)*(dateInput[flag] - '0');
}
switch ((*date))
{
case 0:
//printf("Invalid Format");
return(-1);
case 31:
if ((*month) == 4 || (*month) == 6 || ((*month) == 9) || ((*month) == 11))
{
//printf("Invalid Date");
return(-1);
}
case 29:
if ((*month) == 2)
{
if ((*year) % 100 == 0)
{
if ((*year) % 400 != 0)
{
//printf("Invalid Date");
return(-1);
}
}
else if ((*year) % 4 != 0)
{
//printf("Invalid Date");
return(-1);
}
default:
if ((*date) > 31)
{
//printf("Invalid Format");
return(-1);
}
}
}
return 0;
}
