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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include<ctype.h>
  4.  
  5. int main() {
  6.     char str[512], word[256];
  7.     int i = 0, j = 0;
  8.  
  9.     printf("Enter your input string:");
  10.     gets(str);
  11.  
  12.     while (str[i] != '\0') {
  13.             //how to separate strings (words) when changed from 
  14.  
  15.             // Is the next character the end of the string?
  16.             if(str[i+1] != '\0'){	// <<<
  17.             	//uppercase, lowercase or digit?
  18. 	            if (
  19. 		            isdigit(str[i]) && (isupper(str[i+1]) || islower(str[i+1]))	// <<<
  20. 		            || isupper(str[i]) && (isdigit(str[i+1]) || islower(str[i+1]))	// <<<
  21. 		            || islower(str[i]) && (isupper(str[i+1]) || isdigit(str[i+1]))	// <<<
  22. 	            ){
  23. 	                    word[j] = str[i];	// <<<
  24. 	                    word[j+1] = '\0';	// <<<
  25. 	                    printf("%s\n", word);
  26. 	                    j = 0;
  27. 	            } else {
  28. 	                    word[j++] = str[i];
  29. 	            }	
  30.             }
  31.             else {
  32.             	// End of the string
  33.             	word[j] = str[i];	// <<<
  34. 			    word[j+1] = '\0';	// <<<
  35. 			    printf("%s\n", word);
  36.             }
  37.             i++;
  38.     }
  39.     return 0;
  40. }
Success #stdin #stdout 0s 2116KB
comments (?)
stdin
copy 
thisIS1inputSTRING
stdout
copy 
Enter your input string:this
IS
1
input
STRING
https://ideone.com/LVV0QA
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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