View Compilation Error

0_0_33977731_1842.c: In function 'main':
0_0_33977731_1842.c:6:5: error: stray '\243' in program
     int t，n,sum;
     ^
0_0_33977731_1842.c:6:5: error: stray '\254' in program
0_0_33977731_1842.c:6:12: error: expected '=', ',', ';', 'asm' or '__attribute__' before 'n'
     int t，n,sum;
            ^
0_0_33977731_1842.c:6:12: error: 'n' undeclared (first use in this function)
0_0_33977731_1842.c:6:12: note: each undeclared identifier is reported only once for each function it appears in
0_0_33977731_1842.c:6:14: error: 'sum' undeclared (first use in this function)
     int t，n,sum;
              ^
0_0_33977731_1842.c:7:17: error: 't' undeclared (first use in this function)
     scanf("%d",&t);
                 ^