Indeed

As I remember in RayLib was some function like: DrawFPS(int x,int y);

#include <iostream> #include <string> #include <vector> using namespace std; struct Pair { string name; double val; }; vector<Pair>pairs; double& value(const string& s){ for(int i=0; i<pairs.size(); i++) if(s==pairs[i].name) return pairs[i].val; Pair p={s,0}; pairs.push_back(p); return pairs[pairs.size()-1].val; } int main(){ string buf; while(cin>>buf) { value(buf)++; } for(vector<Pair>::const_iterator p=pairs.begin(); p!=pairs.end(); ++p){ cout<<p->name<<": "<<p->val<<'\n'; } return 0; }

#include <iostream> #include <string> #include <vector> using namespace std; struct Pair { string name; double val; }; vector<Pair>pairs; double& value(const string& s){ for(int i=0; i<pairs.size(); i++) if(s==pairs[i].name) return pairs[i].val; Pair p={s,0}; pairs.push_back(p); return pairs[pairs.size()-1].val; } int main(){ string buf; while(cin>>buf) { value(buf)++; } for(vector<Pair>::const_iterator p=pairs.begin(); p!=pairs.end(); ++p){ cout<<p->name<<": "<<p->val<<'\n'; } return 0; }

can you correct this ?

idk but the code isn't running

Just read the compiler message

> printf("Enter the size of array:\n"); This part is wrong, you could have out of bound array access since the array size is 100

54Array.c [Error] expected declaration specifiers before 'printf'

#include <stdio.h> #include <conio.h> // C Program to find largest number among "n" numbers. int main() int i,n,num[100],max; printf("Enter the size of array:\n"); scanf("%d",&n); for (i=0;i<n;i++); { printf("Enter number \n"); scanf("%d",&num[i]) } max=num[0]; for (i=0;i<n;i++); { if(num[i]>max) max=num[i]; } printf("The largest number is %d",max); return 0; }

#include <stdio.h> #include <conio.h> // C Program to find largest number among "n" numbers. int main() int i,n,num[100],max; printf("Enter the size of array:\n"); scanf("%d",&n); for (i=0;i<n;i++); { printf("Enter number \n"); scanf("%d",&num[i]) } max=num[0]; for (i=0;i<n;i++); { if(num[i]>max) max=num[i]; } printf("The largest number is %d",max); return 0; }

#include <stdio.h> #include <conio.h> // C Program to find largest number among "n" numbers. int main() int i,n,num[100],max; printf("Enter the size of array:\n"); scanf("%d",&n); for (i=0;i<n;i++); { printf("Enter number \n"); scanf("%d",&num[i]) } max=num[0]; for (i=0;i<n;i++); { if(num[i]>max) max=num[i]; } printf("The largest number is %d",max); return 0; }

Can we replace the word "main" with any other word!?

specify an entry point to the linker and compile without the standard runtime library

Can you give me a sample example!!?

google "how to specify entry point in gcc/g++/clang"

so ok ??

i dont know it can run or not but even if it runs...while loop will not ended until you input 0 value to buf

Recomend me a good course to learn c++ I'm a beginner

Theres a lot of tutorials on YouTube

Umm i am stuck at classes and objects, any advices? :(

Thank you bro

what's the best one?

what's the best one?

Try Abdul bari .Ds and c++ on YT ..But would recommend to buy his courses on udemy..On sales sometimes they are very cheap ..Rs 350 apx..

If you want to master c++. Buy the book "Inside c++ object model"

scanf may fail, so its return value needs to be checked. Otherwise you will have a potential reading uninitialized variable. Reading uninitialized variable is undefined behavior.

I think the only way to get input safely is get string and convert it into integer or float. scanf and std::cin are used to formating input. In Python and Rust, You can't get raw input.

scanf can be safe if you use it right, people just don't care with the failure cases when working on it. Their mindset is not ready for real C programming. Do not ever trust any input from user. The program must not crash/UB/broken when receiving anything the user throws at it. That's why we must always validate them.

What will happen if the user input integer that bigger than the variable can hold char tmp; /* Input : -765 */ scanf("%hhd", &tmp); Is using max field width useful ?

What will happen if the user input integer that bigger than the variable can hold char tmp; /* Input : -765 */ scanf("%hhd", &tmp); Is using max field width useful ?

> Is using max field width useful ? what max field?

char str[101]; scanf("%100[^\n]", str); Maximal string input that str can receive is 100 chars.

Yes, useful, it's to limit the buffer size, so any input can never overflow the program.

My question : Is people using max field width in real life application ?

> Are people using [...] ? Some are, some aren't. But obviously they should be.

Btw, by checking value that scanf returned, is it same like std::cin.good()?

hi, could you tell me if it is possible to get sizeof(bool) if bool is stored in a variable as a string? string str = "bool"; cout << sizeof(bool);

you mean the size of str or the size of bool?

isn't bool always 1 ?