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  1. #include <stdio.h>
  2. #include <string.h>
  3.  
  4. int main(void) {
  5. 	char str1[1000];
  6. 	char str2[1000];
  7. 	char temp[1000];
  8. 	char substr[1000];
  9. 	int i, j, count=0, max=0;
  10.  
  11. 	scanf("%s %s",str1,str2);
  12. 	if(strlen(str1) > strlen(str2)){
  13. 		strcpy(temp, str1);
  14. 		strcpy(str1, str2);
  15. 		strcpy(str2, temp);
  16. 	}
  17.  
  18. 	for(i = 0; i < strlen(str1); i++){
  19. 		for(j = 0; j < strlen(str2); j++){
  20. 			count = 0;
  21. 			while(str1[i+count] == str2[j+count] && str1[i+count] != '\0')
  22. 				count++;
  23.  
  24. 			if(count > max){
  25. 				memset(substr, 0, sizeof(substr));
  26. 				strncpy(substr, str1[i], count);
  27. 				substr[count] = '\0';
  28. 				max = count;
  29. 			}
  30. 		}
  31. 	}
  32.  
  33. 	printf("%s",substr);
  34. 	return 0;
  35. }
  36.  
Success #stdin #stdout 0.01s 5324KB
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stdin 
Standard input is empty
stdout 
1	2�
https://ideone.com/70lbrW
language:
C (gcc 8.3)
created:
1 day ago
visibility:
public

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