Question

How to convert string in base 2 to number in base 10 in C

Answer 1

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

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

int main(void) 
{
    long int li = strtol("1111", 0, 2);
    
    printf("%ld", li);
    
    return 0;
}
   
/*
run:

15

*/

 

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