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View Compilation Error

0_0_23996284_17045.cpp: In function 'int main()':
0_0_23996284_17045.cpp:19:21: error: 's' was not declared in this scope
    printf("$%.0f\n",s);
                     ^
0_0_23996284_17045.cpp:21:21: error: 's' was not declared in this scope
    printf("$%.1f\n",s);
                     ^
0_0_23996284_17045.cpp:23:20: error: 's' was not declared in this scope
    printf("$.2f\n",s);
                    ^


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