#include <stdio.h>
 
int main(void)
{
    // здесь продолжайте программу
    char str[50] = "Best  language  \"C\"";
    int flag = 0;
    char space = ' ';
    for(int i = 0;str[i]!='\0';i++){
 
        if(str[i] == str[i+1] == space) flag = 1;
 
        if(flag){
            flag = 0;
            str[i] = '\n';
            for(int j = i+1;str[j]!='\0';j++){
                str[j] = str[j+1];
            }
        }
 
    }
    for (int i = 0;str[i] != '\0';i++){
          printf("%c",str[i]);
 
    }
 
    //__ASSERT_TESTS__ // макроопределение для тестирования (не убирать и должно идти непосредственно перед return 0)
    return 0;
}

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