Question

I am trying to sort integers and strings from an input string.

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

int main(){
    char x[10];
    int y;
    printf("string: ");
    scanf("%s",x);
    y=atoi(x);
    printf("\n %d", y);
    getchar();
    getchar(); }

suppose the input is 123abc1
using atoi i could extract 123 from the input string, my question now is how do i extract abc1?

I want to store abc1 on a separate character variable.

input: 123abc1
output: x = 123, some char variable = abc1

I appreciate any help.

Answer 1

If you wish to use the C programming language concepts, then consider using strtol intead of atoi. It will let you know what character did it stop at:

Also, never use %s in a scanf, always specify the buffer size (minus one, since %s will add a ‘\0’ after storing your input)

#include <stdio.h>
#include <stdlib.h>
int main(void)
{
    printf("string: ");
    char x[10];
    scanf("%9s",x);
    char *s;
    int y = strtol(x, &s, 10);
    printf("String parsed as:\ninteger: %d\nremainder of the string: %s\n",y, s);
}

test: https://ideone.com/uCop8

In C++, if that tag was not a mistake, there are simpler approaches, such as stream I/O.

For example,

#include <iostream>
#include <string>
int main()
{
    std::cout << "string: ";
    int x;
    std::string s;
    std::cin >> x >> s;
    std::cout << "String parsed as:\ninteger: " << x << '\n'
              << "remainder of the string: " << s << '\n';
}

test: https://ideone.com/dWYPx