Some strange problems in the code

Question

Hello I tried to get a external parameters to my main. But somehow the compiler gcc shows me weird problems I have not encountered them and did not find a solution. I would be happy if you help me understand the problems and fix them.

code-

#include <stdio.h>
#include <stdlib.h>

 main(int argc, char** argv[])
 {
 int i;
char temp[99];

for (i=0; i < argc/2 ; i++)
{       
    temp = argv[i];   
    argv[i] = argv[argc-i-1];    
    argv[argc-i-1] = temp;  
}

for(i = 0; i < argc ; i++)
{
    printf("%s",temp[i]);
}
return(0);
 }

errores

error: incompatible types in assignment

warning: assignment from incompatible pointer type

Answer 1

Bad prototype for main: Use int main(), int main(int argc, char** argv) or something compatible.