Convert binary format string to int, in C

Question

How do I convert a binary string like \"010011101\" to an int, and how do I convert an int, like 5, to a string \"101\" in C?

Answer 1

To answer the second part of the question.

char* get_binary_string(uint16_t data, unsigned char sixteen_bit)
{
    char* ret = NULL;
    if(sixteen_bit) ret = (char*)malloc(sizeof(char) * 17);
    else ret = (char*)malloc(sizeof(char) * 9);
    if(ret == NULL) return NULL;

    if(sixteen_bit){
        for(int8_t i = 15; i >= 0; i--){
            *(ret + i) = (char)((data & 1) + '0');
            data >>= 1;
        }
        *(ret + 16) = '\0';
        return ret;
    }else{
        for(int8_t i = 7; i >= 0; i--){
            *(ret + i) = (char)((data & 1) + '0');
            data >>= 1;
        }
        *(ret + 8) = '\0';
        return ret;
    }
    return ret;
}