what.c

int main () {

    // ### Setting up the variables
    char input [100], blank[100];
    fgets(input, 100, stdin);
    int i = 0, k = 0;
    
    // ### Looping over the array
    while (input[i] != '\0') {
        if (input[i] == ' ') {
            int j = i + 1;
            if (input[j] != '\0') {
                while (input[j] != '\0' && input[j] == ' ') {
                    if (input[j] == ' ') {
                        i++;
                    }
                    j++;
                }
            }
        }
        blank[k] = input[i];
        i++;
        k++;
    }
    printf("%s", blank);
}