how to print the first character of a string in c

1// c char str[](single string)
2array[0]
3// c char str[] (multiple string)
4array[0][0]
5// c++ std::stirng s;
6s[0]

1#include <stdio.h> 
2#include<string.h> 
3 
4int main(void)  
5{ 
6	char c[100]; 
7	scanf("%s",c); 
8	/*strlen(c) gives total length of string . string index starts from 0 
9	last index of character is strlen(c)-1*/ 
10	int l = strlen(c)-1; 
11	printf("%c %c",c[0],c[l]); 
12	return 0; 
13} 

1#include <stdio.h>
2
3int main(void){
4  char b[5];
5  scanf("%s",&c);
6  printf("Simple answer %c",b[0:4])
7}