View Compilation Error

0_0_30478813_12202.cpp: In function 'int main()':
0_0_30478813_12202.cpp:6:22: error: 'sanf' was not declared in this scope
 while(sanf("%d%d",n,m)!==EOF)
                      ^
0_0_30478813_12202.cpp:6:25: error: expected primary-expression before '=' token
 while(sanf("%d%d",n,m)!==EOF)
                         ^