PRG29003-2022-1-02

 
#include <stdio.h>
#include <string.h>

int main(){
   char alfa[50]="alo   mundo cruel  !!";
   int i,j,tam,first;
  
   first=0;
   i=0;
   j=0;
   while (alfa[i]!='\0') {
       if (alfa[i]!=' ') {
          alfa[j] = alfa[i]; /* regra geral - copia */
          j++; 
          first=1;
       } else if (first==1){
            alfa[j] = alfa[i]; /* copia */
            first=0;
            j++;
       }
       i++;
   }
   if (j!=0 && alfa[j-1] == ' ')
      alfa[j-1]='\0';
   else
      alfa[j]=0;
   printf("string: %s\n", alfa);     
   return 0;
}