Answers for "strtol in c"

strtol C

#include <stdio.h>
#include <stdlib.h>

int main () {
   char str[30] = "2030300 This is test";
   char *ptr;
   long ret;

   ret = strtol(str, &ptr, 10);
   printf("The number(unsigned long integer) is %ld\n", ret);
   printf("String part is |%s|", ptr);

   return(0);
}

strtol in c

long int strtol(const char *str, char **endptr, int base)

strtol c

# **strtol** | string to long integer | c library function
# EX.
# include <stdlib.h> // the library required to use strtol

int main() {
    const char str[25] = "   2020 was garbage.";
    char *endptr;
    int base = 10;
    long answer;

    answer = strtol(str, &endptr, base);
    printf("The converted long integer is %ld\n", answer);
    return 0;
}

# ignores any whitespace at the beginning of the string and
# converts the next characters into a long integer.
# Stops when it comes across the first non-integer character.

long strtol(const char *str, char **endptr, int base)

# str − string to be converted.

# endptr − reference to an object of type char*, whose value is set 
# to the next character in str after the numerical value.

# base − This is the base, which must be between 2 and 36 inclusive,
# or be the special value 0.

strtol c

long strtol( const char * theString, char ** end, int base );