code. compile. run. debug. share.
#include <cstdio>
#include <cstdlib>
#include <cstring>
int str_to_int (char *str);
int main()
{
int num = str_to_int ("666");
printf ("string to integer: %d\n", num);
return EXIT_SUCCESS;
}
int str_to_int (char *str)
{
int len = strlen (str);
int num = 0;
for (int i = 0; i < len; ++i)
{
num *= 10;
num += str[i] - '0';
}
return num;
}
Compiling Program...
Standard Input:
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