Question

How to convert string to unsigned long number in C

Answer 1

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

int main()
{
    const char *p = "3345322123";

    unsigned long n = strtoul(p, 0, 10);
    
    printf("n = %lu\n", n);
}
 
/*

run:

n = 3345322123

*/

 

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