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#include <iostream>
using namespace std;
int main( )
{
char a[] = "1000";
int b;
sscanf( a, "%d", &b);
cout << b;
return 0;
}
char a[] = "1000";
char * p = a;
int b = 0;
while (*p)
{
b = b * 10 + *p - '0';
p++;
}
printf("%d\n", b);
#include <iostream>
using namespace std;
int main( )
{
char a[] = "0100";
int b;
sscanf( a, "%d", &b);
cout << b;
return 0;
}