Converting an integer to binary in C

Question

I\'m trying to convert an integer 10 into the binary number 1010.

This code attempts it, but I get a segfault on the strcat():

int int_to_bin(int k)
{
          


        

Answer 1

void intToBin(int digit) {
    int b;
    int k = 0;
    char *bits;

    bits= (char *) malloc(sizeof(char));
    printf("intToBin\n");
    while (digit) {
        b = digit % 2;
        digit = digit / 2;
        bits[k] = b;
        k++;

        printf("%d", b);
    }
    printf("\n");
    for (int i = k - 1; i >= 0; i--) {
        printf("%d", bits[i]);

    }

}