272: TEX quotes

What I did here was to use a switch.

Process the line character by character. if the current character is an unoriented double quote, check the switch. if the switch is 0, convert to ``, then switch the switch to 1. If the switch is 1, convert to '', then switch the switch to 0.

Here's a code:

#include

int main() {
  char line[100];
  int i;
  bool x = 0;

  while (fgets(line, 100, stdin)) {
    for (i = 0; line[i]; i += 1) {
      if (line[i] != '\n') {
        if (line[i] == '"') {
          if (x == 0) {
            printf("``");
            x = 1;
          }
          else {
            printf("''");
            x = 0;
          }
        }
        else {
          printf("%c", line[i]);
        }
      }
    }
    printf("\n");
  }

  return 0;
}