View Compilation Error

0_0_20839634_30848.cpp:38:5: error: stray '\250' in program
     n –;  
     ^
0_0_20839634_30848.cpp:95:5: error: stray '\250' in program
     while(t–) {  
     ^
0_0_20839634_30848.cpp: In function 'int pow_mod(int, int, int)':
0_0_20839634_30848.cpp:38:8: error: expected ';' before 'C'
     n –;  
        ^
0_0_20839634_30848.cpp: In function 'int main()':
0_0_20839634_30848.cpp:95:13: error: expected ')' before 'C'
     while(t–) {  
             ^
0_0_20839634_30848.cpp:95:13: error: 'C' was not declared in this scope