CODEWITHSUNDEEP
cstrlen
danielrieske
danielrieske

Reputation: 127

strlen code not working

Working on this little piece of code, but for some reason it keep crashing the whole time.

Anyone got an idea what i'm doing wrong

char *str;
printf("Enter a string\n");
gets(str);
printf("The size of the string is %d", strlen(str));
system("PAUSE");    
return 0;

Upvotes: 0

Views: 1457

Answers (2)

elwin013
elwin013

Reputation: 517

You only created an char* pointer which points to random space in memory and you try to do something with it - and that is why your program crashes.

You should create an array of chars:

char str[50];

or dynamically allocate memory for string with malloc:

char* str;
str = (char *)malloc(50*sizeof(char)); // allocate memory
// some operations
free(str);                      // deallocate memory

where 50 is your estimated size of buffer.

Upvotes: 2

mrks
mrks

Reputation: 8343

You have not allocated any memory for str. Declare a buffer, for example char str[50], but be aware of buffer overflows.

Upvotes: 3

Related Questions