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  1. #include <stdio.h>
  2. #include <string.h>
  3. void processString(char str[]) {
  4.     int firstA = -1, secondA = -1;
  5.     for (int i = 0; i < strlen(str); i++) {
  6.         if (str[i] == 'A') {
  7.             if (firstA == -1) {
  8.                 firstA = i;
  9.             } else {
  10.                 secondA = i;
  11.                 break;
  12.             }
  13.         }
  14.     }
  15.     if (firstA != -1 && secondA != -1) {
  16.         int count = secondA - firstA - 1;
  17.         printf("两A中间字符个数: %d\n", count);
  18.         for (int i = firstA + 1; i < secondA; i++) {
  19.             printf("%c", str[i]);
  20.         }
  21.         printf("\n");
  22.     }
  23. }
  24. int main() {
  25.     char str[40];
  26.     scanf("%s", str);
  27.     processString(str);
  28.     return 0;
  29. }
  30.  
Success #stdin #stdout 0s 5324KB
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stdin 
Standard input is empty
stdout 
Standard output is empty
https://ideone.com/g4yI2C
language:
C (gcc 8.3)
created:
5 days ago
visibility:
public

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