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  1. #include <stdio.h>
  2. #include <ctype.h>
  3.  
  4. #define LINE_LENGTH 42
  5.  
  6. char* find_seperator(char line[]) {
  7. 	for (int i = 0; i < LINE_LENGTH; i++) {
  8. 		if (line[i] == ' ') {
  9. 			return &line[i];
  10. 		}
  11. 	}
  12. }
  13.  
  14. void encode_mask(char line[LINE_LENGTH], char *mask) {
  15. 	for (int i = 0; line[i] != '\0'; i++) {
  16. 		if (*mask++ == '1') {
  17. 			line[i] = toupper(line[i]);
  18. 		}
  19. 	}
  20. }
  21.  
  22. int main(int argc, char *args[]) {
  23. 	if (argc < 2) {
  24. 		fprintf(stderr, "File path not provided. Exiting...\n");
  25. 		return 1;
  26. 	}
  27.  
  28. 	if (argc > 2) {
  29. 		puts("Excessive arguments, only the first will be considered.");
  30. 	}
  31.  
  32. 	FILE *file = fopen(args[1], "r");
  33.     if (file == NULL) {
  34.         perror("Error");
  35.         return 1;
  36.     }
  37.  
  38. 	char line[LINE_LENGTH];
  39. 	while (fgets(line, LINE_LENGTH, file)) {
  40. 		char *mask = find_seperator(line);
  41. 		*mask++ = '\0';
  42. 		encode_mask(line, mask);
  43. 		puts(line);
  44. 	}
  45.  
  46. 	fclose(file);
  47. }
Runtime error #stdin #stdout #stderr 0s 2156KB
comments (?)
stdin 
hello 11001
world 10000
cba 111
stdout 
Standard output is empty
stderr 
File path not provided. Exiting...
https://ideone.com/AGKCPK
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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