some important printf syntax in C

#include<stdio.h>
//code by rajendra
main(){
    char str[30];
    int a=10,b=3;
float result;
result=((float)a)/b;
//result=(float)(a/b);
printf("%d\n",result);

    printf("jitendra"+2);//read after first two
    printf("\n%d %d");//garbage
    printf("\n%d\n",5,7);//output =5
    printf(3+"jitendra");//read after 3 char
    printf("\n");
    printf(3+"jitendra"+2);//read after first 2+3=5 character
    printf("\n");
    printf("%c\n","ABCDEF"[2]);//output C
    //scanf("%[^a]",str);//read the string till alphabate a
    //scanf("%[^\n]",str);//read till enter
    printf("%s",str);
   
    printf("percenatage symbol is %% char of the keyboard\n");//print % symbol
    printf("backslash is \\ character \n\n");
    printf("print double quota using \" and single is '\n\n");
}