G. Conversion – Codeforces Problem Solution in C

Disclaimer: Make sure you tried enough before checking the solution

Problem: https://codeforces.com/group/MWSDmqGsZm/contest/219856/problem/G

#include<stdio.h>
#include<string.h>
int main(){
	char a[1000000];
	int i;
	scanf("%s",a);
	for(i=0;i<strlen(a) ;i++){
        if(a[i]==','){
            printf(" ");
        }
        else{
            if(a[i]>=65 && a[i]<=90){
                printf("%c",a[i]+32);
            }
            else if(a[i]>=97 && a[i]<=122){
                printf("%c",a[i]-32);
            }
        }
	}
	printf("\n");
	return 0;
}

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