CSC209H5 Chapter Notes - Chapter 3: Gnu Compiler Collection, Entry Point, Gold Base
22 Mar 2018
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Csc209h5s - software programming and tools (winter 2018) // declare a string literal char *s = "17"; #include int main() { char *s = "17" ; // below is one way to convert from string to integer. // below is the most appropriate way to convert int i = strtol(s, null , 10 ); printf( "i has the value %d\n" , i); return 0 ; long int strtol( const char *str, char **endptr, int base); Strtol string to long s string to convert. Null uses middle column to tell leftover parts of the string starts (address from pointer to char); used as a starting point [see below] 10 base of the number we are converting to (usual number system) Long can be stored as an int. int main() { char *s = "-17 is the number! char *leftover; //pointer to char (char *)
