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Aug 21st, 2019
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  1. #include <stdio.h>
  2.  
  3. void mostra(char s[]);
  4.  
  5. void mostraInvertido(char s[]);
  6.  
  7. void Inverte(char s[], char sa[]);
  8.  
  9. char touppper(char letra);
  10.  
  11. char tolower(char letra);
  12.  
  13. int main(){
  14.  
  15. char frase[100];
  16.  
  17. printf("\nInforme uma frase: ");
  18. gets(frase[100]);
  19.  
  20. mostraInvertido = frase[100];
  21.  
  22. return 0;
  23. }
  24.  
  25. void mostra(char s[]){
  26.  
  27. for(i=0; i<strlen(s); i++){
  28. printf("\n%c", s[i]);
  29. }
  30. }
  31.  
  32. void mostraInvertido(char s[]){
  33.  
  34. for(i=strlen(s)-1; i>=0; i--){
  35. printf("\n%c", s[i]);
  36. }
  37. }
  38.  
  39. void Inverte(char s[], char sa[]){
  40.  
  41. int i, j;
  42.  
  43. for(j=0, i=strlen(s)-1; i>=0; i--, j++){
  44. sa[j] = s[i];
  45. }
  46. sa[j] = '\0';
  47. }
  48.  
  49. char toupper(char letra[]){ //A=65 Z=90 a=97 z=122
  50.  
  51. int i
  52. for{
  53. letra[] = letra[] - 32
  54. }
  55. return letra[]
  56. }
  57.  
  58. char tolower(char letra){
  59.  
  60. int i
  61.  
  62. for{
  63. letra[] = letra[] + 32
  64. }
  65.  
  66. return letra[]
  67. }
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