chuỗi tiếng việt bạn tham khảo

chuỗi -> binary

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

char* stringToBinary(char* s) {
    if(s == NULL) return 0; /* no input string */
    size_t len = strlen(s);
    char *binary = malloc(len*8 + 1); // each char is one byte (8 bits) and + 1 at the end for null terminator
    binary[0] = '\0';
    for(size_t i = 0; i < len; ++i) {
        char ch = s[i];
        for(int j = 7; j >= 0; --j){
            if(ch & (1 << j)) {
                strcat(binary,"1");
            } else {
                strcat(binary,"0");
            }
        }
    }
    return binary;
}

binary -> chuỗi

#include <stdio.h>
#include <stdlib.h>
int main(void)
{
    char *data = "01010110";
    char c = strtol(data, 0, 2);
    printf("%s = %c = %d = 0x%.2X\n", data, c, c, c);
    return(0);
}