foo.cc: In function 'void stringZip(const char*, long int, char*)':
foo.cc:9:6: warning: unused variable 'j' [-Wunused-variable]
 char j,m;
      ^
foo.cc:9:8: warning: unused variable 'm' [-Wunused-variable]
 char j,m;
        ^
foo.cc: In function 'int main()':
foo.cc:51:7: warning: ignoring return value of 'int system(const char*)', declared with attribute warn_unused_result [-Wunused-result]
 system("pause");
 ~~~~~~^~~~~~~~~

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