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cviceni/iss.cpp

+//+kompilace jako v c ale misto gcc g++
+#include <iostream>
+#include <sstream>
+#include <ctime>
+
+#define LEN 20
+
+int main(int argc, char *argv[]){
+    int *parr=new int[LEN];
+    if(parr==NULL){
+        std::cerr << "alokace se nepovedla" <<std::endl;
+        return 1;
+    }
+
+    int seed=time(NULL);
+    if(argc>1){
+        std::istringstream iss(argv[1]);
+        iss>>seed;
+        //if(!iss.good())
+        if(!iss){
+            std::cerr<<"chyba argumentu"<<std::endl;
+            std::cerr<<"pouziti:" <<argv[0]<<" [seed]"<<std::endl;
+            delete[] parr;
+            return 2;
+        }
+    }
+
+    srand(54);
+    for(int idx=0; idx<LEN; idx++){
+        parr[idx]=rand() %30;
+        //parr[idx]=10+rand() %20;
+        //parr[idx]=rand() & (32-1);
+        std::cout<<parr[idx]<<", ";
+    }
+    std::cout<<std::endl;
+
+    delete[] parr; //+uvolnime co jsme vzali 
+    return 0;
+}
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