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  1. #include <stdio.h>
  2. #include <math.h>
  3. #define MAX 100
  4.  
  5. int str_length(char str[]) {
  6.     int i =0;
  7.  
  8.     while(str[i]!='\0') {
  9.         i++;
  10.     }
  11.  
  12.     return i;
  13. }
  14.  
  15. int str_chave(char str[], int comp) {
  16.     int i=0;
  17.     char chave;
  18.  
  19.     printf("Informe um caractere: ");
  20.     scanf(" %c",&chave);
  21.  
  22.     for (; i < comp; i++) {
  23.         if(str[i]==chave) {
  24.             return 1;
  25.         }
  26.     }
  27.     return 0;
  28. }
  29.  
  30. int main() {
  31.     char string[MAX];
  32.     int comp,chave;
  33.  
  34.     printf("Digite uma string: ");
  35.     scanf("%[^\n]s",string);
  36.  
  37.     comp = str_length(string);
  38.  
  39.     printf("Comprimento de '%s': %d\n",string,comp);
  40.  
  41.     chave=str_chave(string,comp);
  42.     if(chave==0)
  43.         printf("O caractere informado nao existe na string.\n");
  44.     else
  45.         printf("O caractere informado existe na string.\n");
  46.  
  47.     return 0;
  48. }
  49.  
Success #stdin #stdout 0s 4380KB
comments (?)
stdin
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frase de teste
t
stdout
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Digite uma string: Comprimento de 'frase de teste': 14
Informe um caractere: O caractere informado existe na string.
https://ideone.com/vc6jDM
language:
C (gcc 8.3)
created:
6 years ago
visibility:
public

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