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  1. #include <stdio.h>
  2.  
  3. int str_count(char *str, int c);
  4.  
  5. int main(void) {
  6. 	char str[100];
  7. 	char l;
  8.  
  9. 	printf("検索文字の入力：");	scanf(" %c", &l);
  10. 	printf("文字列の入力：");	scanf("%s", str);
  11.  
  12. 	int c = str_count(str, l);
  13.  
  14. 	printf("検索文字数：%d", c);
  15.  
  16. 	return 0;
  17. }
  18.  
  19. int str_count(char *str, int c){
  20. 	int count=0;
  21. 	while(*str){
  22. 		if(*str==c)
  23. 		count++;
  24.  
  25. 		str++;
  26. 	}
  27. 	return count;
  28. }
Success #stdin #stdout 0s 5408KB
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検索文字の入力：文字列の入力：検索文字数：3
https://ideone.com/rgwTKh
language:
C (gcc 8.3)
created:
1 year ago
visibility:
public

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