#include<cstdio>
#include<cstdlib>
#include<cstring>

int main(int argc, char *argv[]){
    printf("Number of args: %d\n",argc);
// This section of code assumes that the first two command
// line arguments are ints, adds them, and prints the answer.
    int answer;
    if(argc >= 3){ // make sure there are three arguments
       answer = atoi(argv[1]) + atoi(argv[2]);
       printf("%d + %d =  %d\n",atoi(argv[1]),atoi(argv[2]),answer);
    }
// This section of code copies the first argument (which will be ./a.out)
// into a string and prints it one character at a time.
    int c = 0;
    char str[100];
    strcpy(str,argv[0]);  // copy argv[0]
    while(str[c] != '\0'){
      printf("%c\n",str[c]);
      c++;
    }
}