I am getting error of type casting from basic string type to integer type and I do not know how to resolve it in the case of vector string and vector of integer type.
below given image shows the error
s1[j]+=int(magazine[i]); 
- 2You need to use atoi or stoi to convert string to integer.Anty– Anty2018-09-19 12:50:06 +00:00Commented Sep 19, 2018 at 12:50
- can u explain how??Raghuvendra Kaushik– Raghuvendra Kaushik2018-09-19 13:14:36 +00:00Commented Sep 19, 2018 at 13:14
- cplusplus.com/reference/cstdlib/atoi and cplusplus.com/reference/cstdlib/itoaNic3500– Nic35002018-09-19 14:36:04 +00:00Commented Sep 19, 2018 at 14:36
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1 Answer
You can't cast a string to integer.However,You can use stoi() to get the string numeric value and then assign it to an integer:
#include <iostream> #include <string> using namespace std; int main() { string str1 = "45"; string str2 = "3.14159"; string str3 = "31337 geek"; int myint1 = stoi(str1); int myint2 = stoi(str2); int myint3 = stoi(str3); cout << "stoi(\"" << str1 << "\") is " << myint1 << '\n'; cout << "stoi(\"" << str2 << "\") is " << myint2 << '\n'; cout << "stoi(\"" << str3 << "\") is " << myint3 << '\n'; return 0; } Output: stoi("45") is 45 stoi("3.14159") is 3 stoi("31337 geek") is 31337 There are other methods too like using stringstream which you might want to look at.Hope it helps.
