#include <cstdio>
#include <cstring>
#include <iostream>
 
const char* haystack = "\"weather\":[{\"id\":800,\"main\":\"Clear\",";
const char* needle   = "\"main\":";
 
int main()
{
    std::cout << "Parsing string: '" << haystack << "'\n";
 
    if (const char* cursor = strstr(haystack, needle)) {
        char buffer[100];
        if (sscanf(cursor, "\"main\":\"%99[^\"]\",", buffer))
            std::cout << "Parsed string: '" << buffer << "'\n";
        else 
            std::cout << "Parsing error!\n";
    } else {
        std::cout << "Could not find '" << needle << "' in '" << haystack << "'\n";
    }
}

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